Cambridge Secondary Checkpoint
Science (1113) Mark Scheme
2022-2009
Update till October 2022
Update till October 2022
Table of Contents
2022 April Paper 1
1
2018 October Paper 1
255
2022 April Paper 2
18
2018 October Paper 2
266
2022 October Paper 1
35
2017 April Paper 1
277
2022 October Paper 2
50
2017 April Paper 2
287
2021 April Paper 1
65
2017 October Paper 1
299
2021 April Paper 2
78
2017 October Paper 2
310
2021 October Paper 1
93
2016 April Paper 1
322
2021 October Paper 2
107
2016 April Paper 2
330
2020 April Paper 1
122
2016 October Paper 1
338
2020 April Paper 2
136
2016 October Paper 2
348
2020 October Paper 1
149
2014 Specimen Paper 1
360
2020 October Paper 2
163
2014 Specimen Paper 2
367
2019 April Paper 1
177
2010 April Paper 1
374
2019 April Paper 2
187
2009 April Paper 1
389
2019 October Paper 1
201
2009 April Paper 2
399
2019 October Paper 2
213
2018 April Paper 1
227
2018 April Paper 2
239
Update till October 2022
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
Paper 1
MARK SCHEME
Maximum Mark: 50
Published
1113/01
April 2022
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements
of the examination. It shows the basis on which Markers were instructed to award marks. It does
not indicate the details of the discussions that took place at a Markers’ meeting before marking
began, which would have considered the acceptability of alternative answers.
This document has 18 pages. Any blank pages are indicated.
[Turn over
Mark schemes should be read in conjunction with the question paper and the End of Series
Report. Cambridge will not enter into discussions about these mark schemes.
IB22 05_1113_01/7RP
© UCLES 2022
1/409
Combined By NESRINE
1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
General guidelines on marking
April 2022
Many descriptive answers can be expressed in a variety of ways. Professional judgement can be
used in these cases, providing it matches the marking points and further information in the mark
scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct answers,
unless the word has a scientifically different meaning. For example, where the answer should be
antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct. Significant
figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
( ) brackets
/ or
exact word is required
the words or units in brackets do not need to be stated, for example, (recycles or
releases or provides) minerals = minerals scores the mark
alternate responses for the same marking point
Annotations and abbreviations
Underline
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
an acceptable response
Ignore
provides extra information when necessary
Accept
Note
error carried forward; marks are awarded if an incorrect response has been carried
forward from earlier working, provided the subsequent working is correct
indicates an incorrect response that would contradict another otherwise correct
alternative
ecf
or reverse argument; for example, as mass increases, volume increases could be
written as mass decreases, volume decreases
Do not accept
ora
Page 2 of 18
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
1(a)
Answer
April 2022
Marks
stem
Further Information
1 Accept rhizome or stalk
Ignore shoot
Do not accept xylem or phloem or root or leaf etc.
(b)
leaves
1 Accept foliage or stem or chloroplast
Do not accept root or flower
(c)
anchorage or absorb water or absorb minerals or
absorb salts or absorb ions
1 Accept food storage or water storage
Accept absorbs nutrients
Ignore helps plant to stand or transport of water or
transport of minerals or supports the plant
Do not accept make their own food
(d)
(idea that flowers) contains reproductive organs
or contains sex organs or produce seeds
1 Accept for reproduction or for pollination or for
propagation or pollen dispersal or fertilisation
Accept to produce fruits
Ignore just to attract insects but Accept to attract
insects for pollination
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
Answer
Marks
April 2022
Further Information
2(a)
He or Ne or Ar
1 Accept helium or neon or argon, but symbol takes
precedence
(b)
F
1 Accept fluorine, but symbol takes precedence
(c)
Mg
1 Accept magnesium, but symbol takes precedence
1 more then one answer circled = 0 marks
(d)
Dalton
Darwin
Galileo
Rutherford
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1113/01
Question
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Answer
Marks
3(a)
April 2022
Further Information
3 each correct answer = 1 mark
thick fur (to keep warm)
Accept thick coat or thick hair or long fur
large ears or long ears (to detect prey)
Ignore sensitive ears or good sense of hearing
large eyes or sensitive eyes
Ignore good eyesight but Accept good eyesight to
see prey in the dark
Accept (idea of) good night vision or nocturnal eyes
Note eyes that can see in the dark is not sufficient
Ignore any adaptations to daytime conditions and
any reference to teeth, jaws, claws or camouflage
Ignore good sense of smell
Accept forward facing eyes or binocular vision as an
extra marking point
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(b)
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
any two from
April 2022
2 each correct answer = 1 mark
no leaves or (leaves replaced by) spines
Accept spikes or thorns or needle like leaves
swollen stems (to store food or store water)
Accept stem stores water
Accept fleshy stems or thick stems
Ignore body stores water or stores a lot of water or
long and hollow
small surface area to volume ratio (to reduce
water loss)
extensive root system
Accept long roots or shallow roots or deep roots or
horizontal roots
thick cuticle
Accept thick waxy layer or thick outer layer
Ignore thick skin
fewer stomata
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
4(a)
Answer
April 2022
Marks
B and C
Further Information
1 both needed for the mark
Accept 2 and 4
(b)
3 correct numerical answer by itself = 2 marks
40 ÷ 2 or distance ÷ time
correct average speed formula = 1 mark
(average speed =) 20
(units) km / h
correct units = 1 mark
Accept km/hr or kmph
Do not accept kph
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
Answer
Marks
5(a)
April 2022
Further Information
3 correct headings of size and volume = 1 mark
size of zinc
volume (of gas collected)
in cm3
powdered
80
large pieces
6
small pieces
36
Accept type of zinc or form of zinc or zinc used
Note zinc unqualified is not sufficient
Accept any order but volume and size must
correspond
units of cm3 for volume written in the heading =
1 mark
Ignore units written within the table – the unit must
be in the heading.
data correctly added = 1 mark
(b)
size of zinc or surface area
1 Accept form of zinc or type of zinc
Do not accept amount of zinc or mass of zinc
unless it is an ecf from 5(a)
Accept ecf from heading of left-hand column of 5(a)
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1113/01
(c)
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
any two from
April 2022
2 each correct answer = 1 mark
the smaller the size of the zinc the faster the
reaction
Accept ora
Note answers must be comparative
the smaller the size of zinc the greater the volume
of gas
Accept answers such as:
larger surface area gives more gas = 1 mark
powder or smaller size has a larger surface area
powder or smaller particles will have more
collisions
powder or smaller size has more exposed
particles
the bigger the surface area the faster the reaction
Smaller particles for
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larger surface area has a faster reaction = 1 mark
larger surface area has more collisions = 1 mark
Accept smaller particles, smaller amount etc. for
smaller size
Combined By NESRINE
1113/01
Question
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Answer
Marks
6(a)
April 2022
Further Information
1 more than one answer circled = 0 marks
natural
random
relative
selective
(b)
The foal inherits characteristics from his parents
through genetic material.
This material is found in the nucleus of the cell.
Page 10 of 18
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2 Accept gene or DNA
Ignore chromosome or nucleus
Accept nuclei or chromosome
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
7(a)
(b)
Answer
Marks
April 2022
Further Information
granite and basalt
1 both needed either order for the mark
(similarity)
rock does not fizz with acid /
grains are rounded
2 one similarity = 1 mark
Ignore they are both rocks
(difference)
sandstone has sand-like grains, but conglomerate
has large rounded pebbles
one difference = 1 mark
Accept grains are smaller in sandstone / ora
Accept grains are different sizes
(c)
high temperature or high pressure
1 Accept heated or compressed or pressure or hot
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
Answer
Marks
8(a)(i)
April 2022
Further Information
1 angle of incidence approximately equal to angle of
reflection by eye = 1 mark
Note angle should be between 45 and 33°
Note – if arrow is included it must be correct
Note the line must be straight
Do not accept more than one reflected ray
2 glass block – first refracted ray bends towards
normal = 1 mark
(a)(ii)
Note first refracted ray travelling along normal = 0
marks
second refracted ray bends away from normal =
1 mark
Note the line must be straight for 2 marks
Ignore arrows on rays
Ignore second normal if drawn
Ignore any reflected rays drawn
(b)
dispersion
1 Ignore refraction
Do not accept diffraction
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
9(a)
Answer
Marks
any two from
April 2022
Further Information
2 each correct answer = 1 mark
mass of peppers or size of peppers
Accept reference to number of leaves or area of
leaves or size of leaves as an additional marking
point
number of peppers
height of plants
(b)
Accept size of plant or size of roots or size of stem
result is more reliable or more representative or
allows averages to be calculated
1 Accept in case some plants died or some plants
were eaten
Accept so can check results are similar or to identify
anomaly
Do not accept more accurate or (idea of) fair test
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1113/01
(c)
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
any two from
April 2022
2 each correct answer = 1 mark
Ignore same number of pepper plants
temperature
Note same conditions is not sufficient
amount of light
amount of CO2
type of soil or amount of soil
amount of water or humidity
Accept how often it was watered
Note water unqualified is not sufficient
growing period or time
amount of fertiliser or volume of fertiliser or
concentration of fertiliser
Accept amount or volume of liquid
type of fertilizer
Note fertiliser unqualified is not sufficient
way of applying fertiliser
size or age of plant
Accept (initial) height of plant or length of plant
same species or same type of plant or same
variety of plant
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1113/01
Question
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Answer
April 2022
Marks
Further Information
3 each correct line = 1 mark
10
mixture of compounds
mixture of elements
mixture of an element and a compound
single compound
single element
Page 15 of 18
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more than one line from a diagram to a
different answer = 0 marks for that
diagram
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
11(a)
(b)
Answer
April 2022
Marks
north (pole) and south (pole)
Further Information
1 both needed either order for the mark

Each field line has at least one arrow.
2 all three correct ticks = 2 marks
two correct ticks = 1 mark

Each field line is continuous.
one or no correct ticks = 0 marks
The field lines are all the same length.
The field lines come out of N and go into S.

The field lines cross over each other.
(c)
magnetic field lines are close(r) together or more magnetic field
lines or magnetic field lines are more concentrated
1 Accept a lot of field lines compared to
weak bar magnet
Accept lines for magnetic field lines
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1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
Answer
12(a)
loudspeaker
air particles
compression
(b)
Marks
ear
April 2022
Further Information
2 each correct label = 1 mark
rarefaction
Which letter shows one wavelength? A
Which letter shows the amplitude of the wave? B
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2 each correct answer = 1 mark
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/02
Paper 2
April 2022
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements
of the examination. It shows the basis on which Markers were instructed to award marks. It does
not indicate the details of the discussions that took place at a Markers’ meeting before marking
began, which would have considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series
Report. Cambridge will not enter into discussions about these mark schemes.
This document has 18 pages. Any blank pages are indicated.
IB22 05_1113_02/8RP
© UCLES 2022
[Turn over
18/409
1113/02
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined
By NESRINE
April 2022
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement can be
used in these cases, providing it matches the marking points and further information in the mark
scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct
answers, unless the word has a scientifically different meaning. For example, where the answer
should be antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct.
Significant figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example, (recycles or
releases or provides) minerals = minerals scores the mark
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been
carried forward from earlier working, provided the subsequent working is correct
ora
or reverse argument; for example, as mass increases, volume increases could be
written as mass decreases, volume decreases
Page 2 of 18
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1
Question
1113/02
cell drawing
Answer
20/409
Page 3 of 18
transports
oxygen
absorbs water
and minerals
detects changes
in the surroundings
pollinates the stigma
of a flower
joins with an egg
contacts to cause
movement
makes sugar using
photosynthesis
function
Further Information
April 2022
more than one line from cell drawing =
0 marks for that cell drawing
one correct = 1 mark
two or three correct = 2 marks
four correct = 3 marks
4 all five correct = 4 marks
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
(b)
2(a)
Question
1113/02
carbon dioxide
potassium
chloride
sodium
sulfate
calcium
nitrate
salt made
Answer
Page 4 of 18
Further Information
April 2022
21/409
1 Accept CO2, but name takes precedence
Do not accept potassium chlorine or
potassium chlorite
Do not accept sodium sulfide or sodium
sulfurate
Accept sodium sulphate
Do not accept calcium nitride
Note if name and formula given both must be
correct
Accept correct formulae Ca(NO3) 2, Na 2SO4,
KCl
3 full name of each correct salt = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
Moon reflects sunlight
star
(b)(ii)
(c)
light travels from the Sun to our eyes
the Earth spins on its axis
Answer
Page 5 of 18
Further Information
April 2022
22/409
Do not accept light reflects off the Sun or
Moon emits light
1 Accept Moon reflects Sun’s rays or light
from Sun bounces off it to the Earth or
reflects light from the Sun
Do not accept Moon or planet
Ignore galaxy or galaxies
1 Accept named stars, e.g. Sirius or Polaris or
Vega
Ignore reference to reflection
Note light travels from the Sun is not
sufficient
1 Accept light travels from Sun to the Earth
Accept any description of the Earth moving
1 Accept Earth moves or Earth rotates
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
(b)(i)
3(a)
Question
1113/02
Combined By NESRINE
(D)
(B)
4
F C
Answer
Page 6 of 18
A E
Further Information
April 2022
if no marks awarded give 1 mark for
A E (B) (D) F C
A and E = 1 mark
2 F and C correct = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
1113/02
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(b)(i)
5(a)
Question
1113/02
24/409
Page 7 of 18
(move quickly)
far apart or random
gas
diffusion
move slowly
close (together) or
regular
(close together)
vibrate
arrangement of particles
liquid
solid
movement of
particles
Answer
Further Information
1
April 2022
Accept particles in a gas are scattered or
particles are separated or further apart
Accept move faster than in a solid or move
slower than in a gas or particles flow over
each other
Ignore particles in a solid do not move or
fixed position
Accept particles in a solid are packed
together or tight together or tight
arrangement
one correct = 0 marks
two or three correct = 1 mark
2 all four correct = 2 marks
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
(b)(ii)
1113/02
Page 8 of 18
particles have spread out (to fill the space)
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Do not accept idea of particles combining or
particle gaining energy or particles expanding
Note particles mixing is not sufficient
Accept (idea of) particles moving
Accept movement (of particles) from region
of high concentration to one of low
concentration
1 Accept random motion of the particles
April 2022
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any number less than 4 (cm)
(b)(i)
26/409
moment decreases or is less
(idea that) distance is less
(idea that) a moment is force × distance
any two from
(idea that) there is a (downward) force
(a)(ii)
(b)(ii)
(idea that) the ruler bends more
Answer
Page 9 of 18
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
6(a)(i)
Question
1113/02
Accept if force is the same and the distance
between the force and the fulcrum
decreases the moment decreases = 2
marks
Accept moment = weight × distance
Accept turning force instead of moment
throughout
Ignore references to pressure
2 each correct answer = 1 mark
1 Do not accept 0
Do not accept there is pressure
Ignore it is pulled down
1 Accept gravity or the weight (of the object)
or it has (more) weight or a (larger) force
1 Accept the distance increases
Further Information
April 2022
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Answer
27/409
any one from
(b)(ii)
Page 10 of 18
good blood supply or (surrounded) by capillaries
thin or permeable or elastic or moist
large surface area
gaseous exchange
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
breathing or moves air in and out of the lungs
B
(b)(i)
(a)(ii)
7(a)(i)
Question
1113/02
1
Accept have enough surface area
1 Accept take up oxygen or get rid of carbon
dioxide or provide oxygen to the blood or
exchange of carbon dioxide and oxygen
Accept separates thorax from abdomen
Accept lungs to expand or lungs to contract
Accept ventilation or inhalation or
exhalation
Accept to bring air or oxygen into the lungs
1 Accept to inhale air or to exhale air
1
Further Information
April 2022
Combined By NESRINE
(b)
8(a)
Question
1113/02
H
(one) proton
(nucleus containing)
Answer
Page 11 of 18
electron
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Do not accept h
1 Ignore H2
Do not accept neutrons in the nucleus
Accept protons
Accept electrons
2 each correct answer = 1 mark
Further Information
April 2022
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rule(r) or callipers
any one from
(b)
(c)
Accept in case there is an anomalous result
or to make sure the outcome is correct
Accept to compare results or see if results
are the same
Accept to make it more reliable
to check for error
1
1 Ignore metre rule(r) or measuring tape
Do not accept for accuracy
Accept so we can compare
Ignore accuracy or fair
Page 12 of 18
Further Information
1 Accept fair test
Marks
April 2022
to enable average to be taken
to look for consistency in tests
(length is a) control variable
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
9(a)
Question
1113/02
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(b)
10(a)
Question
1113/02
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Further Information
cheap to use
Page 13 of 18
no pollution or no greenhouse gases or no harmful gases
Accept ora for fossil fuels
Accept no acid rain pollution or does not
harm environment or cleaner source of
energy or no carbon emissions
Accept named non-renewable fuel is running
out
Accept reduce the use of fossil fuels or
conserves fossil fuels or conserves nonrenewable energy sources
renewable
running out of non-renewable fuels
Accept will not run out of wind
2 each correct answer = 1 mark
Note it depends on the weather is not
sufficient
Accept it is not a reliable energy source
Accept need placing in windy areas
2 each correct answer = 1 mark
Marks
April 2022
energy needs are increasing
any two from
(idea that) difficult to connect to the (electricity) grid
kill birds
spoil view
noisy
(often) in remote places
(idea that) not always windy or energy generation not constant
any two from
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
11
Question
1113/02
rusting
respiration
oxidation
neutralisation
Page 14 of 18
exothermic
endothermic
displacement
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Further Information
more than three circled = 0 marks
three circled and one correct = 0 marks
2 three circled and two correct = 1 mark
Marks
April 2022
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32/409
13
Question
12
Question
1113/02
Aeshna
Argiope
Calliphora
Formica
Scorpio
name
Answer
Page 15 of 18
letter
Y
W
V
X
Z
(idea of) recycling nutrients or minerals (may give an example,
e.g. in N cycle)
(idea of) something that lives on dead or decaying material or
breaks down dead tissue or (organism that) causes something to
rot or decay or breaks down organic matter
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Guidance
Further Information
one correct = 0 marks
two, three or four correct = 1 mark
2 all five correct = 2 marks
Marks
Note mark answers wherever they appear
Note ‘gets rid of dead matter’ is not sufficient
Accept recycling carbon compounds or
making manure or making compost or
increases soil fertility
importance = 1 mark
Accept idea of using waste products as food
Ignore the term decompose in their answer
and use an alternative term in their
description
2 definition = 1 mark
Marks
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(b)(ii)
(b)(i)
15(a)
Question
(b)
14(a)
B
Answer
C
francium
K
N
Na
potassium hydroxide or hydrogen
same pressure
A
P
Po
E
Page 16 of 18
D
Answer
Question
Further Information
April 2022
Further Information
1 Accept Fr, but if symbol and name given
they must both be correct
1 more than one answer circled = 0 marks
1 Accept KOH or H2, but name takes
precedence
Marks
1
1 more than one answer circled = 0 marks
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
1113/02
Combined By NESRINE
16
0.0
–11.0
32.5
B
C
temperature
in °C
A
thermometer
Page 17 of 18
Answer
Question
2
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
1113/02
Accept 0 and –11
one correct = 0 marks
two correct = 1 mark
all three correct = 2 marks
Further Information
April 2022
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Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/01
Paper 1
October 2022
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements
of the examination. It shows the basis on which Markers were instructed to award marks. It does
not indicate the details of the discussions that took place at a Markers’ meeting before marking
began, which would have considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series
Report. Cambridge will not enter into discussions about these mark schemes.
This document has 16 pages. Blank pages are indicated.
IB22 10_1113_01/6RP
© UCLES 2022
[Turn over
35/409
1113/01
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined
By NESRINE
October 2022
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement can be
used in these cases, providing it matches the marking points and further information in the mark
scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct
answers, unless the word has a scientifically different meaning. For example, where the answer
should be antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct.
Significant figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example, (recycles or
releases or provides) minerals = minerals scores the mark
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been
carried forward from earlier working, provided the subsequent working is correct
ora
or reverse argument; for example, as mass increases, volume increases could be
written as mass decreases, volume decreases
Page 2 of 16
36/409
1113/01
1
Question
cell wall
chloroplast
cytoplasm
B
C
D
37/409
Page 3 of 16
nucleus
cell membrane
A
E
name
letter
Answer
Marks
Further Information
October 2022
two or more lines from a letter = 0 marks for
that letter
one correct = 1 mark
two correct = 2 marks
three or four correct = 3 marks
4 all five correct = 4 marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
1113/01
2(b)
2(a)
Question
letter
(F)
K
G
J
H
description
gas
solid
condensing
freezing
liquid
Answer
Page 4 of 16
Marks
Further Information
October 2022
38/409
Note if molecules drawn accept between 2
and 6 molecules inclusive
Ignore arrows showing movement
Ignore different sizes of particle
1 Note need between 2 and 12 particles
inclusive and particles should not be in a
pattern or touching each other
two or three correct = 1 mark
2 all four correct = 2 marks
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PUBLISHED
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1113/01
3(b)
3(a)
Question
39/409
Page 5 of 16
day – part of Earth faces the Sun
and
night – part of the Earth does not face the Sun
Earth revolves on its axis
We can see the Moon because light from the Sun is
reflected to the Earth.
We can see the Sun because the Sun emits or gives
out light.
Answer
Marks
Further Information
October 2022
Note part not facing Sun is dark is not
sufficient
Note answers need to link day and night with
the explanation
Accept rotates (every 24 hours) or spins
2 each correct answer = 1 mark
Both answers correct for the mark
Ignore shines or luminates
2 Accept ‘is a source of’ or radiates
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4(b)
4(a)
Question
1113/01
pollination
(fertilisation)
40/409
seed
formation
Page 6 of 16
Ignore reference to excretion
Accept (idea of) deposited in animal waste
seeds are deposited in animal faeces
Accept attracted by smell
Note by animals is not sufficient
Ignore seed attracted or stuck on animal
3 Note award marking points wherever they
appear in the answer
formation of seeds and dispersal in correct
position = 1 mark
2 pollen formation and pollination in correct
position= 1 mark
Further Information
seeds pass through the gut of animals
dispersal
Marks
October 2022
Accept animals drop seed (at a distance from
parent plant)
Ignore seeds are digested
animals discard uneaten seeds
(animals attracted by) brightly coloured fruit
(animals attracted by) sweet taste
(reason)
animals find (and eat) fruit fallen from trees
(suggestion)
eaten by animals
or
(reason)
rolls away from tree
rots or decays
any three from
(suggestion)
(orange or fruit) falls from tree
pollen
formation
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
oxygen
hydrogen
sodium
chlorine
5(b)(i)
5(b)(ii)
S
5(a)
Question
1113/01
Answer
Page 7 of 16
Marks
Further Information
October 2022
Do not accept oxide
Accept natrium
one correct = 0 marks
two correct any order = 1 mark
2 all three correct any order = 2 marks
1
1
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
41/409
1113/01
any two from
6(b)
Answer
42/409
Page 8 of 16
tuning fork wave is one wave or hammer wave is a mixture
of waves
tuning fork wave is a smooth wave or hammer wave is a
jagged wave
different frequency or different pitch or wave from hammer
has a higher pitch
same amplitude
6(a)
Question
Marks
Further Information
October 2022
Ignore reference to stability of waves or
waves are consistent or inconsistent
Accept ora if tuning fork specified.
Do not accept hammer has lower pitch or
hammer has longer wavelength
Accept waves are closer together with the
hammer
Accept wavelengths are different
2 each correct answer = 1 mark
Do not accept (same) frequency or (same)
wavelength
1 Accept same height
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
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1113/01
7
Question
Accept particles move from a region of high
concentration to one of a low concentration =
2 marks
particles are random
43/409
Page 9 of 16
(coloured dye) goes from a region of high
concentration to one of a low concentration
diffusion occurs
water particles and dye particles mix
Accept particles have random motion or particles
move in all directions = 2 marks
particles spread out or particles of dye separate
or particles disperse
2 each correct answer = 1 mark
Further Information
Accept particles move further apart = 2 marks
Marks
October 2022
particles move
any two from
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
1113/01
8(c)(i)
8(b)
8(a)
Question
Page 10 of 16
(same amount of algae) is a control variable
Do not accept to be more accurate or more
reliable
1 Accept to make it a fair test
Accept more carbon dioxide is used up
(explanation) more photosynthesis uses up carbon dioxide
2 each correct answer = 1 mark
1 Do not accept for respiration
Further Information
Accept high CO2 to low CO2
Marks
October 2022
(description) (carbon dioxide concentration) decreases
to make food or make glucose or make sugar or make
carbohydrate or for photosynthesis or to make oxygen
Answer
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8(d)
8(c)(ii)
Question
1113/01
45/409
Page 11 of 16
respiration or algae are producing carbon dioxide
colour of light
concentration of indicator
volume of indicator
time (before observations were made)
temperature
1 Accept carbon dioxide (concentration) increases
or there is more carbon dioxide
Accept duration (of experiment)
Accept mass of algae
amount of algae or number of algae
2 each correct answer = 1 mark
Further Information
Accept type of algae or type or species of plant
Note algae alone is not sufficient
Marks
October 2022
species of algae
any two from
Answer
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46/409
9(c)
9(b)(iii)
9(b)(ii)
9(b)(i)
9(a)
Question
1113/01
(+)16
−4
(−7)
(+)11
in oC
change in
temperature
repeat his investigation
exo(thermic)
endo(thermic)
endo(thermic)
exo(thermic)
is the reaction
exothermic or
endothermic?
(solid) magnesium (ribbon)
(liquid) (dilute) sulfuric acid
1.5 (cm3)
Answer
Page 12 of 16
Marks
Further Information
October 2022
1 Accept check the results
Note no ecf from (b)(ii)
1 all four correct = 1 mark
1 both needed for mark
Note the negative sign must be included but
positive signs can be missing
1 all three correct = 1 mark
1
Cambridge Lower Secondary – Mark Scheme
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10(b)
current splits
10(a)(ii)
Answer
voltmeter
Page 13 of 16
Marks
Further Information
October 2022
47/409
Do not accept voltameter
1 Accept voltemeter
Accept 2A + 2A + 2A = 6A or 6A gets evenly
split into 3 (the 2 is implied in this answer) or 6A
shared equally between the three lamps
Do not accept voltage splits
Ignore electricity splits
2 Accept electron flow splits
1
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
evidence from diagram, e.g. 6 = 2 + 2 + 2
parallel
10(a)(i)
Question
1113/01
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48/409
Answer
4 050 (million years)
12(b)
iron
4 500 (million years)
calcium
Answer
potassium
Page 14 of 16
sodium
(cells need oxygen) for respiration or to react with glucose
haemoglobin transports oxygen in blood
infectious disease
genetic disease
developmental disease
Marks
Marks
Further Information
October 2022
1
1
Further Information
1 more than one answer circled = 0 marks
Ignore haemoglobin contains oxygen
Accept lack of oxygen
Accept haemoglobin carries oxygen
2 each correct answer = 1 mark
1 more than one answer circled = 0 marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
deficiency disease
12(a)
Question
11(c)
11(b)
11(a)
Question
1113/01
Combined By NESRINE
1113/01
1 Accept ecf from part (b)(i) only
1.2 (g / cm3)
13(b)(ii)
Page 15 of 16
1
60(.0) (g)
1 Accept (density =) m / v
Further Information
13(b)(i)
Marks
(density =) mass / volume
Answer
13(a)
Question
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
October 2022
Combined By NESRINE
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Cambridge Lower Secondary Checkpoint
SCIENCE
1113/02
Paper 2
October 2022
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements
of the examination. It shows the basis on which Markers were instructed to award marks. It does
not indicate the details of the discussions that took place at a Markers’ meeting before marking
began, which would have considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series
Report. Cambridge will not enter into discussions about these mark schemes.
This document has 16 pages. Any blank pages are indicated.
IB22 10_1113_02/6RP
© UCLES 2022
[Turn over
50/409
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Cambridge Lower Secondary – Mark Scheme
PUBLISHED
October 2022
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement can be
used in these cases, providing it matches the marking points and further information in the mark
scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct answers,
unless the word has a scientifically different meaning. For example, where the answer should be
antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct. Significant
figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example, (recycles or
releases or provides) minerals = minerals scores the mark
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been carried
forward from earlier working, provided the subsequent working is correct
ora
or reverse argument; for example, as mass increases, volume increases could be
written as mass decreases, volume decreases
Page 2 of 16
51/409
1113/02
1(a)
Question
Ignore water but accept running river water
geothermal
52/409
tidal
wave
biomass
bio-fuel
biogas
solar power
(bio-)ethanol or (bio-)alcohol
Accept straw or miscanthus or charcoal or
dung etc.
Page 3 of 16
Further Information
1 Accept energy sources or name of a renewable
fuel
Marks
October 2022
hydro-electric
wind
any two from
Answer
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PUBLISHED
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1(b)
Question
1113/02
53/409
Page 4 of 16
produce ash or produces dust or causes acid rain or
cause climate change or greenhouse effect or global
warming
cause pollution or damaging to the environment (by mining
or transport)
more expensive
are finite or will run out
any two from
Answer
Further Information
October 2022
Ignore reference to ozone depletion
Accept causes acid rain pollution = 2 marks
Accept produces named pollutants e.g. carbon
monoxide or to reduce pollution
Note this marking point is more about air
pollution
Accept result in habitat destruction
Accept less harmful to the environment or
protect environment or damages environment
Note this marking point is more about general
environment
Accept takes a long time to make it e.g. takes
thousands or millions of years to make
Accept becoming harder to find or limited
2 each correct answer = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
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1113/02
2
Question
mixture
element
compound
54/409
Page 5 of 16
the smallest particle that
can exist
contains only one type of
atom
a pure substance that
contains two or more
different types of atoms
chemically joined together
an impure substance that
contains only one type of
molecule
two or more substances
that can be separated by a
physical method
Answer
Further Information
October 2022
two lines from one type of substance = 0 marks
for that substance
3 each correct line = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
1113/02
(F)
E
B
D
3(e)
3(d)
55/409
Further Information
Accept zinc powder irritates the skin
Accept sulfuric acid is an irritant
powdered zinc is dangerous to eyes
2
1 Accept (graduated or volumetric) pipette or
burette
Accept more successful collisions = 2 marks
Accept sulfuric acid is harmful
Ignore facemask
use tongs
Page 6 of 16
Accept laboratory coats
wear gloves
wear goggles / eye protection
then any one from
hot equipment can burn hands
heated solutions may spit or heated solution may splash
October 2022
Accept more collisions per second or greater
collision frequency = 2 marks
2 each correct answer = 1 mark
1
E, B and D correct = 1 mark
2 G and A correct = 1 mark
Marks
sulfuric acid is corrosive or sulfuric acid causes
(chemical) burns or sulfuric acid is dangerous to eyes or
sulfuric acid splashing into eyes
any one from
measuring cylinder
more collisions (per second)
particles have more energy / particles move faster
A
3(c)
G
hydrogen
(C)
Answer
3(b)
3(a)
Question
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
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4(b)
4(a)(ii)
transmits blue and green light
4(a)(i)
dispersion
(green light) is absorbed
(blue light) is reflected
transmits white light
transmits no light
Page 7 of 16
transmits green and red light
transmits blue and red light
Answer
Further Information
October 2022
1
2
1 more than one answer circled = 0 marks
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Question
1113/02
Combined By NESRINE
56/409
5
Question
1113/02
reptiles
amphibians
group
Answer
57/409
Page 8 of 16
moist skin
lay eggs in water
scaly skin
lay eggs in water
moist skin
lay eggs on land
scaly skin
lay eggs on land
description
Further Information
October 2022
two lines from a group = 0 marks for that group
2 each correct line = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
1113/02
as distance increases the amplitude decreases
any number from 0.1 to 0.2 (cm) inclusive
(idea that) it is easier to see a pattern
6(b)(i)
6(b)(ii)
6(b)(iii)
Page 9 of 16
loudness
Answer
6(a)
Question
Further Information
October 2022
58/409
Do not accept to get accurate results or fair test
Ignore to get clear(er) results or to spot
anomalous results
Accept have a larger range of results
1 Accept makes the results more reliable
1
Note this marking point must be comparative
1 Accept ora
Do not accept pitch or frequency or wavelength
1 Accept volume (of sound) or noise level
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
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1113/02
variation
selective (breeding)
nucleus
7(a)
7(b)
7(c)
Question
Answer
Page 10 of 16
Further Information
1 Accept chromosome(s)
1 Ignore genetic modification
1
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
October 2022
Combined By NESRINE
59/409
60/409
Answer
(food) biscuit
8(d)



Page 11 of 16
(reason) (idea that there is) the greatest increase in the
temperature of the water
popcorn
writes down the colour of the food
uses the same type of food
keeps the burning food the same
distance from the test-tube
burns the same mass of food
mixes and burns all the food together
always starts with cold water at 10 °C
Further Information
1 both correct = 1 mark
1
one correct = 0 marks
two correct = 1 mark
2 all three correct = 2 marks
2 each correct answer = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
The chemical energy in the food is transferred into
light, sound and thermal/heat energy.
8(c)
8(b)
8(a)
Question
1113/02
October 2022
Combined By NESRINE
1113/02
9(b)(i)
9(a)
Question
swims into the bag
Page 12 of 16
(idea that) turtle thought it was a jellyfish
turtle has mistaken the bag for food
any one from
blown in from landfill sites etc.
washed out in river estuaries
illegal dumping
litter e.g. discarded food packaging or thrown into sea by
humans
lost cargo
thrown overboard by ships
any one from
Answer
1
1
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
61/409
Accept gets caught in the handles of the bag or
gets caught in the holes in the bag
Accept they try to eat the plastic bag
Accept get stuck hunting for jellyfish or get
stuck hunting for food
Accept sewage or throwing into sea or
dumping into sea
Further Information
October 2022
Combined By NESRINE
1113/02
9(b)(iii)
9(b)(ii)
Question
Further Information
62/409
Page 13 of 16
(reason) sea birds starve / fewer (baby) turtles to eat
Accept increase and easier to feed on turtles
because they are trapped = 2 marks
Ignore die or become extinct
correct reason = 1 mark
2 decrease = 1 mark
Accept cannot swim
cannot move or inhibits movement or cannot reach the
surface
(effect) numbers (of sea birds) will decrease
Accept get tangled and eaten
(idea that) eaten more easily by predators
turtles cannot breathe or get air
Accept suffocate or drown in the bag or cannot
breathe or strangled by bag
Accept (idea of) difficult to hunt for food
turtles find less food or turtles starve
less reproduction or less turtles born
Accept unable to survive
2 each correct answer = 1 mark
Marks
October 2022
turtles die
any two from
Answer
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PUBLISHED
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1113/02
63/409
+ oxygen +
12
4
(principle of) moment(s)
11(b)(ii)
Question
30 (N)
rust(ing)
iron
11(b)(i)
11(a)
Question
10(b)
10(a)
Question
Answer
Answer
water
Answer
Page 14 of 16
hydrated iron oxide
Further Information
October 2022
Further Information
Further Information
1 Accept 2 protons and 2 neutrons
Marks
1 Accept force × distance = force × distance
1
Note the arrows need to be vertical or nearly
vertical
1 Accept one correct arrow on the scissors
Marks
1 Accept corrosion or oxidation
correct product = 1 mark
2 correct reactants any order = 1 mark
Marks
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
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1113/02
64/409
14
Question
13
Question
Further Information
remains get changed into rock
Accept get trapped or covered by sand or mud
or small particles of rock
get trapped or covered by sediment
Accept (idea that) bones, remains or calcium
get replaced by minerals
Accept found in sedimentary rock
Accept reference to dead animal or plant or
skeleton
Page 15 of 16
Further Information
2 each correct answer = 1 mark
Marks
Note just quoting the numbers is not sufficient
for correct use of numbers there must be some
attempt to show a calculation as an equation or
in words
(remains of) dead animals or plants
any two from
Answer
any correct use of numbers, e.g.
100 = 64 + 36
240 = 60 + 180
24 = 12 + 12
782 = 382 + 400
Accept energy put in = (total) energy out(put)
(idea that) the energy put into the machine is equal to the
useful energy plus the other forms of energy
Accept energy cannot be created or destroyed
or energy can only be transferred (not lost or
gained)
if no = 0 marks for the question
2 each marking point = 1 mark
Marks
October 2022
yes (no marks)
Answer
Cambridge Lower Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/01
Paper 1
April 2021
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the
examination. However, we have not been able to adjust it to reflect the full range of answers that would
have been seen as a part of the normal moderation and marking process, and it does not necessarily contain
all the possible alternatives that might have arisen.
Cambridge will not enter into discussions about the mark scheme.
65/409
Combined By NESRINE
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement
can be used in these cases, providing it matches the marking points and further information
in the mark scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct
answers, unless the word has a scientifically different meaning. For example, where the answer
should be antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct.
Significant figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example,
(recycles or releases or provides) minerals = minerals scores the mark
underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise
correct alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can
still be achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been
carried forward from earlier working, provided the subsequent working is
correct
ora
or reverse argument; for example, as mass increases, volume increases
could be written as mass decreases, volume decreases
66/409
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Question
Answer
1(a)
A
1(b)
1(c)
A
B
B
C
C
Marks
D
D
Further Information
1
more than one answer circled = 0 marks
1
more than one answer circled = 0 marks
1
both needed for the mark either order
E
E
mouth and stomach
Accept throat / pharynx for mouth
Ignore nose / nasal cavity
67/409
Combined By NESRINE
Question
2(a)
Answer
Marks
Rock A is sedimentary rock.
2
Further Information
all three correct = 2 marks
one or two correct = 1 mark
Rock B is igneous rock.
Rock C is metamorphic rock.
2(b)
any two from
2
each correct answer = 1 mark
Accept sediment / mud / sand
(small) particles of rock
sink to bottom of seas or lakes
Accept under high pressure compacted
grains or rock particles stick together
compressed / cemented
68/409
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Question
3(a)
Answer
Marks
2
Jupiter
Mars
Further Information
each correct tick = 1 mark
but
the Sun

North Star

two correct ticks and one incorrect tick
= 1 mark
the Earth’s Moon
one correct tick and one incorrect tick
= 1 mark
two incorrect ticks included in answer
= 0 marks
3(b)
3(c)
Copernicus
Earth
Question
4
Darwin
Jupiter
Galileo
Neptune
Rutherford
Venus
Answer
1
more than one answer circled = 0 marks
1
more than one answer circled = 0 marks
Marks
2
Further Information
all five correct = 2 marks
Scientific name
letter
Buccinum
C
two, three or four correct = 1 mark
Ensis
D
Mytilus
B
one correct = 0 marks
Ostrea
E
Patella
A
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Question
Answer
Marks
Further Information
5(a)
11
1
5(b)
8
1
5(c)(i)
F
1
Accept fluorine
1
all three correct = 1 mark
5(c)(ii)
70/409
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Question
6(a)
6(b)
Marks
have the same pitch
3
trace A
trace B
trace A
trace B
trace A
trace B
have the same loudness
trace A
trace B
have the same amplitude
Further Information
all four correct = 3 marks
three correct = 2 marks
have the same frequency
two correct = 1 mark
one correct = 0 marks
1
makes them move
Question
7
Answer
Answer
any two from
choose parents with the desired characteristics and mate them together / choose
A and B and mate them together
select offspring with the desired combination of features
use the offspring to produce subsequent generations
71/409
Accept makes them vibrate
Marks
Further Information
2
each correct answer = 1 mark
Accept breed / cross / cross-breed /
reproduce instead of mate
Combined By NESRINE
Question
Answer
Marks
8(a)
48 (cm3)
1
8(b)
to ensure his results are reliable
1
Further Information
Do not accept to get more accurate
results / for a fair test
Accept reduce errors / check results / to
get an average
8(c)
1
wear goggles or eye protection / wear gloves
Accept wear lab coat / protective
clothing
Ignore face masks
8(d)
8(e)
bar graph
line graph
pie chart
scatter graph
do preliminary work / try out different concentrations / double the concentration
72/409
1
1
more than one answer circled = 0 marks
Combined By NESRINE
Question
Answer
Marks
9(a)(i)
The difference between the two containers is the surface / A is dull and
B is shiny .
1
9(a)(ii)
The water cools faster in container A because the container is a better
radiator.
1
9(b)
water in C is hotter / water in A is cooler
1
Further Information
Accept only A is dull / only B is shiny
Assume unqualified answers refer to C
Accept ora for A
9(c)
greater surface area / more convection / more radiation / more conduction / more
evaporation
1
Assume unqualified answers refer to D
Note the answer must be comparative
Accept ora for A
73/409
Combined By NESRINE
Question
Answer
10(a)
Marks
adaptation
reason
large ears
pull grass from
ground
trunk
keep elephant cool
tusks
used to fight other
elephants
1
10(b)(i)
East (Africa)
1
10(b)(ii)
any two from
2
Further Information
all three correct = 1 mark
each correct answer = 1 mark
hunting / poaching
habitat destruction
disturbance
Accept global warming
climate change / pollution
74/409
Combined By NESRINE
Question
Answer
11(a)
Marks
solids
liquids
gases
A
(B)
C
E
3
one or two letters correct = 1 mark
D
any two from
all five letters correct = 3 marks
three or four letters correct = 2 marks
any letter in more than one column is
incorrect for that letter
F
11(b)
Further Information
2
each correct answer = 1 mark
if no marks awarded accept (liquid)
changes to a gas = 1 mark
(idea that) particles move further apart
(idea that) particles move faster / gain energy
(idea that) particles escape from liquid
(idea that) forces between particles in liquid reduced / overcome
75/409
Combined By NESRINE
Question
12(a)
Answer
Marks
any one from
Further Information
1
Accept insects / birds / bees for
pollinators
to attract pollinators
to create a landing platform for insects
12(b)
to produce pollen / produce male gametes
1
12(c)(i)
transfer of pollen (from bee to stigma)
1
12(c)(ii)
any two from
2
each correct answer = 1 mark
(pollen grain) develops a pollen tube
male gamete moves down the style or pollen tube / male gamete moves to the
ovary / pollen tube grows down the style / pollen tube grows towards the ovary
male gamete fuses with ovule / male gamete joins the ovule / male gamete fuses
or joins with female gamete
fertilisation
forms a zygote
forms a seed
76/409
Accept nucleus for gamete throughout
Combined By NESRINE
Question
Answer
13(a)
force / area
or
Marks
Further Information
2
each correct answer = 1 mark
correct answer on its own = 2 marks
500 / 400
1.25 (N / cm2)
13(b)
13(c)
pressure increases
1
(very) high pressure / too much pressure / weight is acting through a small area
1
77/409
Accept pressure is 50 (N / cm2) /
pressure is 40 times bigger
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/02
Paper 2
April 2021
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the
examination. However, we have not been able to adjust it to reflect the full range of answers that would
have been seen as a part of the normal moderation and marking process, and it does not necessarily contain
all the possible alternatives that might have arisen.
Cambridge will not enter into discussions about the mark scheme.
78/409
Combined By NESRINE
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement
can be used in these cases, providing it matches the marking points and further information
in the mark scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct
answers, unless the word has a scientifically different meaning. For example, where the answer
should be antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct.
Significant figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example,
(recycles or releases or provides) minerals = minerals scores the mark
underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise
correct alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can
still be achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been
carried forward from earlier working, provided the subsequent working is
correct
ora
or reverse argument; for example, as mass increases, volume increases
could be written as mass decreases, volume decreases
79/409
Combined By NESRINE
Question
Answer
Marks
Further Information
1(a)
growth / the fungus has increased in size
1
Accept reproduction / fungi have
increased in number
1(b)
any three from
3
each correct answer = 1 mark
Accept descriptions of the
characteristics
irritability / responds to stimuli / sensitivity
movement / locomotion
nutrition / feeding
excretion
Do not accept breathing
respiration
Note if more than one characteristic
given in (a) accept the extra
characteristics in (b)
Ignore first characteristic given in (a)
Accept growth or reproduction /
breeding / produce offspring if not given
in (a)
80/409
Combined By NESRINE
Question
2(a)
2(b)
Answer
Marks
Further Information
Animals belonging to the same species are able to
breed / mate / reproduce together to produce
fertile offspring
2
each correct answer = 1 mark
any two from
2
each correct answer = 1 mark
Note assume the answer refers to
Siamese cats if not specified
(Siamese cats)
Accept ora if Manx cat specified
have a (long) tail
Accept tail length
have smooth fur / sleek fur
Accept smoothness of fur / density of fur
no stripes (on fur)
Accept (fur) colour / different patterns
(on fur) / darker (fur)
have dark extremities (feet, ears, tail, faces)
have more slender bodies / longer bodies
81/409
Combined By NESRINE
Question
Answer
Marks
3(a)(i)
Burning a fuel in air is called combustion.
1
3(a)(ii)
The reaction between an acid and an alkali is called neutralisation.
1
2
3(b)
Further Information
each correct answer = 1 mark
Accept either order
Question
4
Answer
Marks
When white light enters a prism it is split into seven different colours.
This process is known as dispersion.
The coloured light is known as the colours of the spectrum.
82/409
4
Further Information
each correct word = 1 mark
Combined By NESRINE
Question CSS01184
5(a)
8Cp6 A
5(b)
8Cp5 A
Answer
A
B
Marks
C
D
sodium chloride
Further Information
1
more than one letter circled = 0 marks
1
Accept NaCl
Do not accept sodium chlorine
83/409
Combined By NESRINE
Question
Answer
Marks
6(a)
ammeter
1
6(b)
both 0.125 (A)
1
6(c)
A5 is 0.5 (A)
2
A6 is 0.75 (A)
84/409
Further Information
Accept ameter / ampmeter
each correct answer = 1 mark
Combined By NESRINE
Question
7(a)
Answer
Marks
change in pulse rate in
beats per minute
Further Information
1
all three correct = 1 mark
1
if ‘yes’ box ticked = 0 marks
2
each correct answer = 1 mark
30
33
29
7(b)
(no)
he has not repeated them
7(c)
any two from
only tested three boys / has not tested all the boys in the school
Mike has a higher pulse rate at the start than Oliver
Accept the sample size is very small /
only tested his friends
Mike has the highest pulse rate after exercise
Mike has the highest change in pulse rate
(the idea that) pulse rate and fitness are not (necessarily) linked
85/409
Accept cannot judge fitness by heart
rate / pulse rate does not measure
fitness
Combined By NESRINE
Question
Answer
Marks
8(a)(i)
D
1
8(a)(ii)
The reaction in experiment B is endothermic because there is a
temperature decrease.
1
8(b)
there is no reaction / no heat released and absorbed
1
Further Information
Accept it is not exothermic and not
endothermic
Accept energy instead of heat
86/409
Combined By NESRINE
Question
9(a)
Answer
Marks
34.5 (m)
9(b)(i)
Further Information
1
Note any other value circled or two or
more values circled = 0 marks for the
question
3
x-axis labelled as time in s, sec or
second(s) and y-axis labelled as
distance in m or metre(s) = 1 mark
other three points correct plotted within
½ small square = 1 mark
smooth line of best fit = 1 mark
Note if axes reversed = max 2 marks
(points and line of best fit)
9(b)(ii)
1
20 (m)
Accept distance to within ±0.5 m
Accept ecf from graph drawn
87/409
Combined By NESRINE
Question
Answer
Marks
10
3
Further Information
all four correct = 3 marks
two or three correct = 2 marks
one correct =1 mark
88/409
Combined By NESRINE
Question
Answer
Marks
Further Information
11(a)
Na
1
Accept sodium
11(b)
Cu
1
Accept copper
11(c)
Zn
1
Accept zinc
11(d)
Cu
1
Accept copper
89/409
Combined By NESRINE
Question
12(a)
Answer
any two from
Marks
Further Information
2
each correct answer = 1 mark
oil will decrease
coal will decrease
nuclear will increase
12(b)(i)
biomass / solar / wind / tidal / hydroelectric / geothermal / wave
1
Accept named biomass, e.g. wood /
vegetable oil
12(b)(ii)
(idea that) we need to be more reliant on renewable energy
1
Accept reduce climate change
Accept non-renewables are a finite
source / non-renewables will run out /
ora
90/409
Combined By NESRINE
Question
13(a)
Answer
Marks
any one from
Further Information
1
measure the distance (the dye had) travelled up the stem
13(b)
find the change in mass of the jar and water / find the change in mass of the
celery
Accept mass of jar and water will fall /
mass of celery will increase
measure the change in volume of the liquid in the jar
Note measure amount of water before
and after is not sufficient
any two from
2
amount of light / light intensity
wind-speed / draughts
humidity
size of stick of celery (e.g. leaf area, mass or amount etc.)
91/409
each correct answer = 1 mark
Accept as extra marking points
• starting depth of water / starting
volume of water / starting amount
of water / amount of water put into
the jar
• the dye used
• the time (celery left in coloured
water)
Combined By NESRINE
Question
Answer
Marks
Further Information
14(a)
barium (sulfate) / calcium (sulfate) / lead (sulfate)
1
Accept Ba, Ca or Pb but name takes
precedence
14(b)
(yes)
1
‘no’ box ticked = 0 marks
potassium salts are soluble (in water)
or
only lead chloride and silver chloride are insoluble
92/409
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/01
October 2021
Paper 1
FINAL MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at the Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
93/409
Combined By NESRINE
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement
can be used in these cases, providing it matches the marking points and further information
in the mark scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct
answers, unless the word has a scientifically different meaning. For example, where the answer
should be antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct.
Significant figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example,
(recycles or releases or provides) minerals = minerals scores the mark
underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise
correct alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can
still be achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been
carried forward from earlier working, provided the subsequent working is
correct
ora
or reverse argument; for example, as mass increases, volume increases
could be written as mass decreases, volume decreases
94/409
Combined By NESRINE
Question
1
Answer
Marks
Further Information
3 each correct answer = 1 mark
part
function
artery
carries blood from the heart
pumps blood (around the body)
Ignore pumps oxygen
Ignore oxygenated or deoxygenated
Ignore contracts and relaxes
capillary
allows exchange of substances between blood
and organs
Accept capillaries
vein
carries blood (back) to the heart
heart
95/409
Ignore carries blood from the tissues
Combined By NESRINE
Question
2(a)
2(b)
Answer
boiling
condensing
evaporating
Marks
melting
any two from
Further Information
1 more than one answer circled = 0 marks
2 each correct answer = 1 mark
Note each answer must imply a change so
particles do not move is not awarded a mark
Descriptions of particles in a solid are not sufficient
(particles are) losing energy
(particles are) slowing down
(particles are) becoming more ordered or arrangement becomes less
random or become arranged in a lattice
Accept particles get closer together or get more
tightly packed or become compacted as an extra
marking point
Accept (attractive) forces between particles
increases or gets stronger as an extra marking
point
96/409
Combined By NESRINE
Question
Answer
Marks
Further Information
2 each correct answer = 1 mark
2(c)
line increasing
Do not accept if any portion of the line decreases
Note line does not need to start at the origin
Ignore any labels on line
two horizontal sections
97/409
Combined By NESRINE
Question
Answer
Marks
Further Information
3(a)
C
1
3(b)
H
1 Accept Neptune
3(c)
E
1 Accept Jupiter
3(d)
B – Venus
F – Saturn
H – Neptune
1
98/409
Combined By NESRINE
Question
4(a)(i)
Answer
Marks
collect or take in or absorb more water
Further Information
1 Ignore just take in water
Accept to absorb as much water as it can or
increase chance of absorbing water
Accept collect or take in or absorb water from a
large, big or deep area
Accept collect or take in or absorb water
because roots have a large surface area
4(a)(ii)
any one from
1
spines or spikes (instead of leaves) to reduce water loss or spines or
spikes (instead of leaves) to stop transpiration or evaporation
Accept (idea of) to stop being eaten by animals
or spines to stop plant wilting
Accept does not have leaves so reduced loss of
water or no leaves so reduced transpiration
(fleshy) stem to store water
Accept (large) stem to store water
thick waxy layer to reduce water loss
4(b)
2 correct names in order = 1 mark
cactus → kangaroo or rats → snakes → (desert) foxes
Accept reverse order
all three correct arrows in the direction from
cactus to fox = 1 mark
99/409
Combined By NESRINE
Question
Answer
5(a)
C
B
(A)
Marks
E
Further Information
2
D
CB in correct order = 1 mark
ED in correct order = 1 mark
5(b)
sulfuric (acid)
1 Accept hydrogen sulfate
5(c)
hydrogen
1
100/409
Combined By NESRINE
, Question
Answer
Marks
Further Information
3 correct linear scale and labelling of x-axis = 1
mark
6(a)
correct linear scale and labelling of y-axis = 1
mark
all points correctly plotted to within half a square =
1 mark
Accept plots with small x, dot or dot with circle
2 (2, 3) or (3,2.8) circled = 1 mark
6(b)
smooth curve through other plots = 1 mark
Accept any indication of anomalous plot
2 each idea = 1 mark
6(c)
(idea that) as the number of lamps increases the current decreases
Ignore negative correlation unqualified
(idea that) the relationship is not linear
Accept graph is not a straight line or line is curved
Accept (idea that) the relationship between
current and number of lamps is inversely
proportional = 2 marks
101/409
Combined By NESRINE
Question
Answer
Marks
Further Information
7(a)(i)
photosynthesis
1
7(a)(ii)
oxygen
2 each correct product = 1 mark
glucose or sugar
7(a)(iii)
any one from
1
provides (a source of) food
provides (a source of) energy
provides oxygen for respiration
provides glucose for respiration
7(b)(i)
roots
1 Accept root hairs
7(b)(ii)
any one from
1
(transported) in solution or dissolved in water
through xylem (vessels) or vascular bundles
Do not accept phloem
102/409
Combined By NESRINE
Question
Answer
Marks
Further Information
8(a)
measuring cylinder
1
8(b)(i)
70 (cm3)
and
reaction is faster or rate is doubled
1 Accept any value from above 35 cm3 to 70 cm3
Accept more acid particles available to react with
the excess magnesium or more collisions between
particles
both correct for the mark
8(b)(ii)
any two from
2 each correct answer = 1 mark
Do not accept concentration of acid
volume of acid
temperature (of acid)
Accept surface area of the magnesium or amount
of magnesium or volume of magnesium
mass of magnesium or size of magnesium ribbon
time (taken to collect the gas)
8(c)
(idea that) sodium would be too reactive or might explode or might
burst into flames
103/409
1
Combined By NESRINE
Question
Answer
Marks
Further Information
2 each correct answer = 1 mark
9(a)
pollute the water
Accept examples of pollution,
e.g. pesticides or fertilisers or litter
remove the water from the pond or destroy the habitat or pond
Accept building near the pond
9(b)
Toads belong to a group of vertebrates called amphibians.
1 more than one answer circled = 0 marks
9(c)
This means the toads in the pond all belong to the same species.
1 Accept population
104/409
Combined By NESRINE
Question
Answer
10(a)
10(b)
10(c)
10(d)
4 cm / minute
Marks
A
B
C
D
A
B
C
D
A
B
C
D
5 cm / minute
8 cm / minute
Further Information
1 more than one answer circled = 0 marks
1 more than one answer circled = 0 marks
1 more than one answer circled = 0 marks
40 cm / minute
105/409
1 more than one answer circled = 0 marks
Combined By NESRINE
Question
Answer
Marks
Further Information
3 each correct answer = 1 mark
11
At the very centre of the Earth is the core.
Accept inner core
Do not accept outer core
This is surrounded by a layer of magma called the mantle.
Accept thin or thinner crust or outer crust or
lithosphere
On top of the magma is the Earth’s outer layer called the crust.
Question
12
Answer
Marks
(idea that) they are destroyed by heat / they are destroyed by high
temperature
Further Information
1 Do not accept fossils are burned
or
Accept by the weight of rocks on top or crushed
(idea that) they are destroyed by (high) pressure
106/409
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/02
Paper 2
FINAL MARK SCHEME
October 2021
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at the Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
107/409
Combined By NESRINE
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement
can be used in these cases, providing it matches the marking points and further information
in the mark scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct
answers, unless the word has a scientifically different meaning. For example, where the answer
should be antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct.
Significant figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example,
(recycles or releases or provides) minerals = minerals scores the mark
underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise
correct alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can
still be achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been
carried forward from earlier working, provided the subsequent working is
correct
ora
or reverse argument; for example, as mass increases, volume increases
could be written as mass decreases, volume decreases
108/409
Combined By NESRINE
Question
1(a)
Answer
part of plant
cell
Marks
tissue
leaf

palisade
mesophyll
root hair
1(b)
organ
Further Information
2 all three parts correct = 2 marks
two parts correct = 1 mark
one part correct = 0 marks
two ticks in a row is incorrect except accept
palisade mesophyll as a cell and a tissue


part of animal
cell
sperm

tissue
organ
2 all three parts correct = 2 marks
two parts correct = 1 mark
one part correct = 0 marks
stomach

heart

109/409
two ticks in a row is incorrect
Combined By NESRINE
Question
Answer
2(a)
Marks
Further Information
1 both correct for the mark
B
Note two lines from or to any box = 0 marks
beryllium
Be
boron
2(b)
Br
1 Accept natrium
sodium
Ignore Na
2(c)
carbonate
hydroxide
oxide
sulfate
110/409
1 more than one answer circled = 0 marks
Combined By NESRINE
Question
Answer
3(a)
radiation
Marks
Further Information
1 both correct for the mark
The way the air above a
heater becomes warm.
Note two lines from or to any box = 0 marks
The way energy from the Sun
reaches the Earth.
convection
3(b)
The way the metal handle of
a cooking pot gets hot.
any three from
3 each correct answer = 1 mark
conduction
Accept copper is a conductor
particles vibrate
Accept particles move to and fro for vibrate or
particles gain kinetic energy
(as temperature increases) particles vibrate more / vibrate faster
Note particles vibrate faster / vibrate more = 2
marks
vibration passes from one particle to another / energy passes from one
particle to another
Accept heat passes from one particle to another
Accept higher level answer,
e.g. by electrons = 1 mark which move = 1 mark
111/409
Combined By NESRINE
Question
Answer
Marks
Further Information
4(a)(i)
concentration / strength (of weed killer)
1 Accept amount of weed killer or amount of
solution
4(a)(ii)
any two from
2 each correct answer = 1 mark
number of weeds or seedlings
species of weed or seedlings
Accept type of weed
age of weed or seedlings or size of weed or seedlings
volume of weed killer
Accept time
length of exposure to the weed killer
type of weed killer used
Accept temperature as an extra marking point
Accept humidity as an extra marking point
Accept light as an extra marking point
Accept type of cotton wool or amount of cotton
wool as an extra marking point
112/409
Combined By NESRINE
Question
4(a)(iii)
Answer
Marks
any two from
Further Information
2 each correct answer = 1 mark
number of weeds or seedlings used in each dish (at the start)
Accept size of weeds
number of weeds or seedlings killed or number of weeds or seedlings
surviving
concentration of weed killer
volume of weed killer
time or length of exposure (to weed killer)
4(b)
any one from
1
(weed killer) may be toxic
Accept weed killer may burn skin or may kill you
or may harm you or give an allergic reaction
(weed killer) may be corrosive
Ignore dangerous
(weed killer) may be an irritant
Ignore so weed killer does not affect skin
(weed killer) may be harmful
Ignore damage skin must specify the type of
damage
(weed killer) may be poisonous
113/409
Combined By NESRINE
Question
Answer
Marks
2 each correct answer = 1 mark
5(a)
5(b)
Further Information
on the poles
Accept south pole or north pole or on the ends
this is where the magnetic field is strongest
Note this mark is independent of the poles
X written between the poles or on the poles
1 Accept the centre of the cross within the shaded
region
Note if two crosses drawn both must be correct
5(c)
C
1
114/409
Combined By NESRINE
Question
6(a)
Answer
Marks
Universal Indicator or pH meter
Further Information
1 Accept pH paper or pH indicator
Do not accept use litmus
6(b)
wear eye protection or goggles
(because) liquids are corrosive or irritants or harmful
2 safety precaution = 1 mark
linked explanation = 1 mark
or
wear gloves or avoid getting liquids on your skin
(because) liquids are corrosive or toxic or irritants or harmful
or
wear a lab coat or protective clothing or avoid getting liquids on
clothes
(because) liquids are corrosive or toxic or irritants or harmful
115/409
Accept burns instead of corrosive or give an
allergic reaction instead of irritation
Note unqualified damage to the skin is not
sufficient
Combined By NESRINE
Question
Answer
Marks
Further Information
7(a)
selective breeding or artificial selection
1 Ignore cross breeding
7(b)
(male) C
1 both correct for the mark
and
(idea that) it is the variety with most wool
Question
8(a)
Answer
Marks
(particle X) electron
2 each correct answer = 1 mark
(particle Y) neutron
8(b)
8(c)(i)
8(c)(ii)
Copernicus Galileo
Accept both names reversed for 1 mark
Newton
Pasteur
1 more than one answer circled = 0 marks
Rutherford
1 Accept two / second / 2nd
Carbon is found in Period 2 of the Periodic Table.
Ar
Further Information
Al
B
Li
Si
116/409
1 more than one answer circled = 0 marks
Combined By NESRINE
Question
Answer
Marks
Further Information
9(a)
C
1
9(b)
B
1
9(c)
D
1
9(d)
C and D
1 both correct any order for the mark
117/409
Combined By NESRINE
Question
Answer
Marks
2 each correct answer = 1 mark
10(a)
10(b)
Further Information
exhaled air has less oxygen or air breathed out has less oxygen
Accept ora / 4% difference
exhaled air has more carbon dioxide or air breathed out has more
carbon dioxide
Accept ora / 3.96% difference
any two from
2 each correct answer = 1 mark
oxygen goes into the blood or oxygen leaves the air
Accept deoxygenated blood becomes oxygenated
or oxygen enters capillaries
carbon dioxide leaves the blood or carbon dioxide enters the air
Accept carbon dioxide leaves capillaries
(by) diffusion
(and) gaseous exchange
10(c)
1 both correct for the mark
any two from
Accept mouth, larynx or voice box, pharynx as
extra parts
trachea or windpipe
bronchus or bronchi
Ignore lungs / nostril / throat
bronchiole
118/409
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Question
11(a)
Answer
Marks
reacts rapidly with acid and slowly with water or more bubbles with acid
than water
Further Information
1 Accept reacts vigorously with acid but not with
water
Note faster with acid is in the question so do not
credit if written
Note needs a comment about reaction with acid
and the reaction with water
11(b)
zinc or iron or lead or tin
1 Accept correct symbol but name takes
precedence, e.g. Zn / Fe / Pb / Sn
11(c)
(colourless gas) hydrogen
2 each correct answer = 1 mark
(alkaline solution) potassium hydroxide
Question
12
Answer
Marks
colour
of light
colour
of object
colour the object
appears
white
red
red
green
green
green
blue
red
black
Further Information
2 all three correct = 2 marks
one or two correct = 1 mark
Ignore pink for red
Accept light or dark preceding the colour
Accept no light or no colour for black
119/409
Combined By NESRINE
Question
Answer
Marks
Further Information
13(a)
dispersion or dispersal
1 Ignore refraction
13(b)
prism
1 Accept any type of prism
120/409
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Question
14
Answer
Marks
2 each correct tick = 1 mark
coal
hydroelectric
three ticks and two correct = 1 mark

three ticks and one correct = 0 marks
oil
more than three ticks = 0 marks
natural gas
solar
Further Information

121/409
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Cambridge Lower Secondary Checkpoint
SCIENCE
1113/01
Paper 1
April 2020
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the
examination. However, we have not been able to adjust it to reflect the full range of answers that would have
been seen as a part of the normal moderation and marking process, and it does not necessarily contain all the
possible alternatives that might have arisen.
Cambridge will not enter into discussions about the mark scheme.
122/409
Combined By NESRINE
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement can be
used in these cases, providing it matches the marking points and further information in the mark
scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct answers,
unless the word has a scientifically different meaning. For example, where the answer should be
antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct. Significant
figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ OR
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example, (recycles or
releases or provides) minerals = minerals scores the mark
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been carried
forward from earlier working, provided the subsequent working is correct
ora
or reverse argument; for example, as mass increases, volume increases could be
written as mass decreases, volume decreases
123/409
Combined By NESRINE
Question
Answer
1
part of a
cell
only in
animal
cells
only in
plant
cells
cell
membrane
Marks
in both
animal
and
plant
cells

cell wall

chloroplast

Further Information
2 all three correct = 2 marks
two correct = 1 mark
one correct = 0 marks
if more than one tick in a row, 0 marks
for that row
124/409
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Question
Answer
Marks
Further Information
2 all four correct = 2 marks
2(a)
two or three correct = 1 mark
one correct = 0 marks
2(b)
any two from
2 each correct answer = 1 mark
Accept other valid answers
plastic is an insulator / does not conduct electricity
(idea of) makes the wires safe / prevents electrocution
flexible
can be coloured
2(c)
1 more than one box ticked = 0 marks
All metals have low melting
points.
Some metals are gases at
room temperature.
All metals conduct heat.

All metals are brittle.
125/409
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Question
Answer
Marks
Further Information
3(a)
Sun
1
3(b)
any two from
2 each correct answer = 1 mark
planets move around the Sun / planets do not move around the Earth / only the
Moon moves around the Earth
the Earth moves / the Sun does not move
Accept named planets missing e.g.
Uranus is not in the model
(idea that) not all the planets are in the model
the order of the planets is not correct
orbit size is not correct / not to scale
objects in model are not to scale
3(c)
any one from
1
the Moon moves around the Earth
planets move in orbits
a correct statement about the order of the planets e.g.
a correct statement about the relative size of the planets e.g. Jupiter is the
largest planet
126/409
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Question
Answer
Marks
Further Information
2 all three correct = 2 marks
4(a)
one or two correct = 1 mark
4(b)
A = artery
2 Accept aorta / named artery
C = vein
Accept vena cava / named vein
127/409
Combined By NESRINE
Question
5(a)
Answer
Marks
chlorine and bromine
Further Information
1 both correct = 1 mark
Accept liquid and gas
5(b)
1 Accept Cl2
Cl
5(c)
1 more than one box ticked = 0 marks
Forces between the particles push them apart.

The particles are free to move.
The particles can easily be squashed into a small space.
The particles increase in size to fill the space.
5(d)
2 Accept molecules instead of particles
any two from
particles gain energy / (some) particles have more kinetic energy / (some)
particles move faster
particles have overcome attraction between them / idea that forces between
particles have been broken
particles have spread further apart (in the gas phase)
128/409
Do not accept boils
Accept bromine changes to a gas /
bromine changes to vapour
Accept particles diffuse into the air /
particles escape from the liquid
Combined By NESRINE
Question
6(a)
Answer
Marks
2 Accept rarefaction and compression as
an alternative to vibrating
vibrating / moving
(air) particles
6(b)(i)
Further Information
1 At least one wave greater than 6 small
squares. Above or below the midline
any wave with greater amplitude
Ignore frequency
6(b)(ii)
1 Diagram must show at least two
complete waves
any wave with greater frequency
Accept incomplete waves providing at
least two complete waves are drawn
Ignore amplitude
Question
7(a)
Answer
(seed germination)
7(b)
pollination
method of seed dispersal
A
by animals
B
by wind
Marks
fertilisation
seed formation
reason
have hooks / attach to
hair or fur
light (weight) / feathery /
parachute shaped
129/409
Further Information
1 all three in correct order for one mark
2 each method and reason correctly
linked = 1 mark
Combined By NESRINE
Question
Answer
Marks
Further Information
8(a)(i)
3
1
8(a)(ii)
4
1
8(b)
2.8.1 or
2 If drawn ignore distribution of electrons
within each shell so long as numbers
are correct
Accept dots or circles instead of
crosses
total of 11 electrons drawn outside of
the nucleus = 1 mark
But
drawing showing 2.8.1 = 2 marks
Accept correct use of 2.8.1 notation =
2 marks
Ignore any particles shown in the
nucleus
130/409
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Question
Answer
Marks
Further Information
9(a)(i)
both picked up 24 / both picked up the maximum number of paper clips
1
9(a)(ii)
using more paper clips
1 Accept repeat using bigger paper clips
/ replace with iron filings and measure
the mass of iron filings
9(b)(i)
fewer paper clips picked up
1
9(b)(ii)
their hands are different / Pierre’s hand is bigger / Mike’s hand is smaller
1
131/409
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Question
Answer
Marks
Further Information
10(a)(i)
answer in the range
pH 2 – pH 2.5
1
10(a)(ii)
any two from
2 each correct answer = 1 mark
test at more pH values
test between pH 1 and pH 3 / test at pH 2
repeat the experiment / take averages
10(b)(i)
any one from
1
liquid is corrosive / burn tissue / liquid would harm skin
10(b)(ii)
1 Accept avoid contact with skin / avoid
contact with eyes / do not swallow / do
not ingest it / mop up spillages
any one from
wear goggles / wear gloves / apron / lab coat
do not taste / smell the liquid
use only small quantities
10(c)
any one from
1
(keep same) temperature
(use same) amount or proportion or concentration of enzyme
(use same) amount or proportion or concentration of egg white
mix liquids evenly
132/409
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Question
11(a)
11(b)(i)
11(b)(ii)
Answer
Marks
colour change / fizzing / bubbles / new substance forms / some form of coating
magnesium nitrate
x
x
Further Information
1 Accept temperature change
1 Ignore X in the grey box
x
1
copper
133/409
Combined By NESRINE
Question
12(a)
Answer
Marks
Further Information
1 reflected ray correct by eye = 1 mark
see diagram below
Do not accept arrow in the wrong
direction
note − arrow does not need to be
shown
12(b)
1 refracted ray correct by eye = 1 mark
see diagram below
Ignore arrows
12(c)
2 two rays from light source continued to
edge of object and onto screen = 1
mark
see diagram below
middle ray goes to object = 1 mark
Ignore arrows
134/409
Combined By NESRINE
Question
13
Answer
(glucose) + oxygen
Marks
Further Information
2 oxygen as a reactant = 1 mark
water + carbon dioxide
water and carbon dioxide (either order) as products
= 1 mark
Accept formula but names take precedence
• oxygen, O2
• water, H2O
• carbon dioxide, CO2
135/409
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Cambridge Lower Secondary Checkpoint
SCIENCE
1113/02
Paper 2
April 2020
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and learners, to indicate the requirements of the
examination. However, we have not been able to adjust it to reflect the full range of answers that would have
been seen as a part of the normal moderation and marking process, and it does not necessarily contain all the
possible alternatives that might have arisen.
Cambridge will not enter into discussions about the mark scheme.
136/409
Combined By NESRINE
General guidelines on marking
Many descriptive answers can be expressed in a variety of ways. Professional judgement can be
used in these cases, providing it matches the marking points and further information in the mark
scheme.
Answers may have words spelt incorrectly. Credit is normally given for phonetically correct answers,
unless the word has a scientifically different meaning. For example, where the answer should be
antennae, credit will be given for antena but not for anthen (too close to anther).
Only the science is being assessed so answers do not need to be grammatically correct. Significant
figures will be indicated in the question or in the mark scheme.
Unless specified all marking points are independent.
Annotations and abbreviations
/ OR
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated, for example, (recycles or
releases or provides) minerals = minerals scores the mark
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been carried
forward from earlier working, provided the subsequent working is correct
ora
or reverse argument; for example, as mass increases, volume increases could be
written as mass decreases, volume decreases
137/409
Combined By NESRINE
Question
1(a)
1(b)
Answer
C
A
(E)
D
Marks
Further Information
2 C and A correct = 1 mark
B
D and B correct = 1 mark
1 Ignore lots of milk
good tasting milk / disease free / healthy
Accept size / meat production / docile /
good temperament
1(c)
1
Copernicus
Darwin
Galileo
Pasteur
Rutherford
138/409
Combined By NESRINE
Question
2(a)
Answer
increase the
temperature
of nitric acid
increase the
concentration
of nitric acid
2(b)
Marks
more crowded particles so more
collisions
more surface area so more collisions
Further Information
2 each correct link = 1 mark
two lines from same way = 0 marks
particles move faster so more
collisions
has bigger particles so that there are
more collisions
2 Note assume answer refers to the
reactant as a lump unless otherwise
specified
any two from
(idea that) larger pieces have smaller (surface) area / ora
reaction occurs at the surface
Accept larger pieces have less surface
/ fewer particles exposed (on surface)
Accept particles collide less often / less
frequent collisions / less chance of a
collision
so fewer collisions / ora
139/409
Combined By NESRINE
Question
Answer
Marks
3(a)
86 ± 1 (m)
1
3(b)
4.7± 0.2 (s)
1
3(c)(i)
3(c)(ii)
(average speed = )
1
distance
time
Further Information
Accept d / t or s / t
Ignore m / s
2 correct answer = 2 marks
110
18
correct working only = 1 mark
6 or 6.1 (m / s)
Accept 6.111111 with any number of
decimal places
Accept 6
140/409
1
9
Combined By NESRINE
Question
4(a)
Answer
large flat feet
thick eyelashes
does not produce sweat
4(b)
Marks
stop sinking into sand
stop sand getting into eyes
stop too much water loss or stop
dehydration
any two from
Further Information
3 each correct line = 1 mark
2 each correct answer = 1 mark
thick fur
Accept other valid answers
lots of fat
small ears
short legs
small surface area to volume ratio
greasy coat
large feet
141/409
Combined By NESRINE
Question
Answer
Marks
Further Information
5(a)
filter it / filtration
1
5(b)
evaporate the solution / crystallisation
1 Accept heat or boil the solution
5(c)
magnesium
+
sulfuric
acid
hydrogen
+
magnesium
sulfate
2 reactants (any order) = 1 mark
products (any order) = 1 mark
Accept correct formulae but words take
precedence
Accept mix of words and formulae
note magnesium is Mg, sulfuric acid is
H2SO4, hydrogen is H2 and magnesium
sulfate is MgSO4
Question
Answer
Marks
Further Information
6(a)
decreases / gets lower
1
6(b)
increases / gets higher
1
6(c)
increase the temperature
1 Accept heat (it)
142/409
Combined By NESRINE
Question
7(a)
Answer
Marks
Water and minerals enter plants through the root hair cells.
Further Information
3 each correctly sentence = 1 mark
The water and mineral solution is transported in the stems through xylem
cells.
The solution reaches the palisade mesophyll cells in the leaves and is
used for growth.
7(b)
any two from
2 each correct answer = 1 mark
carbon dioxide
light
chlorophyll
enzymes
143/409
Combined By NESRINE
Question
Answer
8(a)
metamorphic
8(b)
atmosphere
8(c)
fossils
8(d)
clay
Marks
Further Information
1 Accept named metamorphic rock
inner core
mantle
1 more than one answer = 0 marks
outer core
1
loam
sandy
1 more than one answer = 0 marks
silt
144/409
Combined By NESRINE
Question
9
Answer
Marks
change
angle y
Further Information
4 each correct answer = 1 mark
control
any two from
loudness of ticking clock
length of tubes
type of material / type of board
Accept position of board
distance of clock from tube
distance of sound meter from tube
other sounds in the room
measure
any one from
loudness of sound / sound level
angle y (and x)
Ignore distance
145/409
Combined By NESRINE
Question
10(a)
Answer
Marks
nerve cell has extensions / nerve cell has connections with other cells / nerve
cell has larger surface area
Further Information
1 Accept nerve cell is not round
Ignore have different shapes
10(b)
2 function = 1 mark
function – to carry oxygen
adaptation – (idea of) large surface area / rounded shape / flexible /
has haemoglobin / no nucleus
146/409
adaptation = 1 mark
Note accept mark points wherever they
are written
Combined By NESRINE
Question
Answer
Marks
Further Information
11(a)
2.4 (cm3)
1
11(b)(i)
°C
1 note award unit mark if shown in table
but answer line takes precedence
11(b)(ii)
1 correct numerical value including
correct sign = 1 mark
change in
temperature
(+3)
–3
+4
11(b)(iii)
1 all correct for the mark
type of reaction
exothermic
endothermic
exothermic
147/409
Combined By NESRINE
Question
12(a)
Answer
Marks
any two from
Further Information
2 each correct answer = 1 mark
rub the objects together
charges move / electrons move from the cloth
charges / electrons moves must be
mentioned for the second mark
electrons move to the rod
12(b)
Opposite charges attract.
1 both correct = 1 mark
Like charges repel.
12(c)
1 all three correct = 1 mark
(A is positive.)
B is positive.
C is negative.
D is negative.
Question
13
Answer
Marks
1
light energy = 10 J
148/409
Further Information
Combined By NESRINE
Cambridge Lower Secondary Checkpoint
SCIENCE
1113/01
Paper 1
October 2020
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at a Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document has 14 pages. Any blank pages are indicated.
IB20 10_1113_01/7RP
© UCLES 2020
[Turn over
149/409
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1113/01
Checkpoint Secondary – Mark Scheme
PUBLISHED
October 2020
Annotations and abbreviations
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been carried
forward from earlier working, provided the subsequent working is correct
ora
or reverse argument
Page 2 of 14
150/409
1
Question
1113/01
5
N
U
151/409
E
S
T
S
M
A
S
E
A
L
S
L
L
P
I
C
P
O
3T
U
L
L
two or three correct = 2 marks
R
G
N
Page 3 of 14
A
Accept if answers are written next to or
under question
Ignore incorrect spelling
A
R
W
T
L
one correct = 1 mark
L
four or five correct = 3 marks
O
E
October 2020
Further Information
4 all six correct = 4 marks
Marks
Y
C
4
O
2
H
1C
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
2
(b)
(a)
Question
1113/01
change
152/409
A high–amplitude sound must be a
sound with a large wavelength.
A high–amplitude sound must be a
low–frequency sound.
A high–amplitude sound must be a
loud sound.
A high–amplitude sound must be a
high–pitch sound.

increase in
pitch
increase in
amplitude
decrease in
loudness
decrease in
frequency
A high–amplitude sound must be a
high–frequency sound.
display
Answer
Page 4 of 14
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
1 more than one answer ticked = 0 marks
Note more than one line from a display
is incorrect for that display
one correct = 1 mark
two or three correct = 2 marks
3 all four correct = 3 marks
Marks
October 2020
Combined By NESRINE
3
153/409
The outer core is the hottest part of
the Earth.
The mantle is the coldest part of
the Earth.
The inner core is solid and the
outer core is liquid.
The crust floats on the outer core.
(d)

outer core
crust
(c)
mantle
Page 5 of 14
high temperatures would destroy remains (before they become fossils)
(b)
inner core
igneous
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
(a)
Question
1113/01
Further Information
1 more than one box ticked = 0 marks
1 more than one circled = 0 marks
Accept hot magma (destroys fossils)
Accept it is (too) hot / lava or magma
would destroy fossils
1 Accept fossils (already in rocks) would
melt / idea that no animals living in or
near a volcano
1 Accept basalt / granite / dolomite /
pumice / obsidian / other named
igneous rocks
Marks
October 2020
Combined By NESRINE
4
(d)
(c)
(b)
(a)
Question
1113/01
1 Note must have how the number
changes and an explanation
Accept plant for grass
154/409
Page 6 of 14
respiration / movement / excretion / faeces / urine / heat
(number) stays the same because more are eaten and there is more food
OR
OR
1 Accept waste (products) / waste
(materials)
Accept (number) increase because
less competition for food to eat /
(number) increases because more food
available
lion
(number) increases because there are more plants to eat
jackal
1 correct sequence of organisms = 1
mark
Accept (number) goes down because
the predator will eat more
Do not accept an incorrectly named
predator e.g. jackal
goat
Further Information
1 both needed for mark
either order
Marks
October 2020
(number) goes down because the wild cat will eat more of them
grass
vole and rabbit
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
5
(b)
both react with acids
(a)(ii)
hydrogen
both react with oxygen
copper
(a)(i)
Question
1113/01
Answer
Page 7 of 14
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
1
Accept do not react with cold water as
an extra marking point
2 each correct answer = 1 mark
1
Marks
October 2020
Combined By NESRINE
155/409
6
(b)
(ii)
(a)(i)
Question
1113/01
red
red
magenta
blue
red
colour of book
red
colour of light
red
no light
red
Page 8 of 14
colour of light reflected into eye
disperses / dispersion / splits into the spectrum / splits into different colours of
light
refraction / it is refracted
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
156/409
Accept black for no light
one correct = 0 marks
two correct = 1 mark
2 all three correct = 2 marks
Do not accept reflection
1 Accept gives colour of rainbow /
rainbow colours / gives many colours
Do not accept disperses / dispersion /
reflection
1 Accept changes direction / bends
(towards the normal) / slows down
Marks
October 2020
Combined By NESRINE
7
157/409
(c)
(b)
(a)
Question
1113/01
Further Information
Accept tube A has greatest difference
between initial and final temperatures
correct comparison of temperatures of any two tubes
Page 9 of 14
(the temperature falls,) then rises again at 4 minutes
tube A at 3 minutes
plot a (line) graph (of each on same axes)
Accept the tubes lose heat energy
rate of cooling is faster at the start for all 3 tubes / ora
Accept does not fit the pattern / it
decreases too fast or too much
2 each correct answer = 1 mark
1 Do not accept bar chart / pie chart or
histogram
Accept temperature of the water in
tube A decreased the fastest or
dropped the fastest / temperature of
water in tube B dropped the slowest = 2
marks
Accept temperature of water in tubes A
or C are lower than the temperature of
the water in tube B
Accept the longer the time the lower
the temperature
2 each correct answer = 1 mark
Marks
October 2020
the temperature of tubes decreases
any two from
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
(d)
Question
1113/01
Further Information
Page 10 of 14
Accept this marking point even if
method is incorrect
measure the temperature change in both tubes
Ignore repeat the previous experiment
Accept any insulating material e.g.
paper tissue
Do not accept aluminium foil
2 each correct answer = 1 mark
Marks
October 2020
(idea of) different (identical) tubes of hot water, one covered with fur, cloth
etc. and one without any covering
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Combined By NESRINE
158/409
8
(ii)
(b)(i)
(a)
Question
1113/01
Copernicus
Darwin
protons and neutrons
mixture of one element and three
compounds
mixture of two elements and two
compounds
mixture of four compounds.
mixture of four elements
Galileo

Answer
159/409
Page 11 of 14
Rutherford
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
1 more than one circled = 0 marks
either order
2 each correct answer = 1 mark
1 more than one tick = 0 marks
Marks
October 2020
Combined By NESRINE
9
(b)
(a)
Question
1113/01
Further Information
160/409
stop-watch / stop-clock / timing gate
and
rule / ruler / measuring tape
Page 12 of 14
correct use of data to illustrate answer with high slope
correct use of data to illustrate answer with low slope
in the same time
1 both required in either order
Accept speed is twice as fast with high
slope = 1 mark
Accept speed with high slope is 0.5
(m/s)
Accept speed with low slope is 0.25
(m/s)
Accept the same distance travelled has
a shorter time = 2 marks
Accept greater distance in same time /
travels an extra metre in the same time
= 2 marks
Note just quoting data is not sufficient
for the award of a mark
any two from
high slope makes block move greater distance / low slope makes block move
less distance
no mark for yes or true on its own
2 Note if no / false = 0 marks for the
question
Marks
October 2020
yes / true
Answer
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close switches 1 and 2 (and open switch 3)
close switches 1 and 3 (and open switch 2)
idea that current divides
(c)
(d)
parallel
Answer
Page 13 of 14
one gas is swapped for or takes the place of another gas
oxygen
Answer
(slope) slope made of the same material
(position) block placed at top of slope / block placed in same position
(block) same block / same size block / block made of the same material /
same mass block / same weight block
any two from
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
(b)
11 (a)
Question
(b)
10 (a)
Question
(c)
Question
1113/01
Further Information
Further Information
Further Information
Do not accept current increases
1 Accept current splits / current
separates
1 Do not accept having switch 2 closed
1 Do not accept having switch 3 closed
1
Marks
1 Accept idea that oxygen and carbon
dioxide exchanged
1
Marks
2 each correct answer = 1 mark
Marks
October 2020
Combined By NESRINE
(b)
12 (a)
Question
1113/01
Further Information
Accept particles collide more often /
more frequent collisions / more chance
of a collision / more (successful)
collisions
so more collisions / ora
Page 14 of 14
Accept smaller pieces have more
surface / more particles exposed on
surface
3 each correct answer = 1 mark
1
Marks
October 2020
idea that smaller pieces have larger (surface) area / ora
rate of reaction increases / gets larger / gets faster
any value between 21 and 22 (seconds)
Answer
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Cambridge Lower Secondary Checkpoint
SCIENCE
1113/02
Paper 2
October 2020
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at a Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document has 14 pages. Any blank pages are indicated.
IB20 10_1113_02/4RP
© UCLES 2020
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Checkpoint Secondary – Mark Scheme
PUBLISHED
Annotations and abbreviations
October 2020
/ or
alternate responses for the same marking point
( ) brackets
the words or units in brackets do not need to be stated
Underline
exact word is required
Accept
an acceptable response
Do not accept
indicates an incorrect response that would contradict another otherwise correct
alternative
Ignore
indicates an irrelevant answer that is not creditworthy. Full marks can still be
achieved even with answers that are ignored.
Note
provides extra information when necessary
ecf
error carried forward; marks are awarded if an incorrect response has been carried
forward from earlier working, provided the subsequent working is correct
ora
or reverse argument
Page 2 of 14
164/409
1
(b)
(ii)
(a)(i)
Question
1113/02
no jointed legs / body is not segmented
D
has 8 legs
B
Page 3 of 14
has 6 legs / 1 pair of antennae / 3 body parts (head, thorax, abdomen) / has
wings
A
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
Accept no exoskeleton
1 must have letter and reason
Accept four pairs of legs
Accept two body parts / two segments
1 must have letter and reason
Accept three pairs of legs
1 must have letter and reason
Marks
October 2020
Combined By NESRINE
165/409
166/409
3
Answer
60 (°C)
(iii)
Answer
Page 4 of 14
When electromagnetic waves are involved the process is radiation.
When particles are involved the processes are conduction and
convection.
freezing
81 to 82 (°C)
The particles of the gas slow down.
The particles of the gas hit the surface of
the balloon more often.
The particles of the gas get bigger.

Checkpoint Secondary – Mark Scheme
PUBLISHED
The particles of the gas expand to fill the
space.
(ii)
(b)(i)
(a)
Question
2
Question
1113/02
Further Information
Further Information
either order
2 each correct sentence = 1 mark
Marks
1
1 Accept solidification / solidifying /
freeze
1
1 if more than one tick = 0 marks
Marks
October 2020
Combined By NESRINE
5
Question
4
Question
1113/02
Answer
earlier than males.
On average, females become sexually mature
Page 5 of 14
This is due to the increased amount of hormones made by the sex organs.
Both sexes begin to grow body hair.
During adolescence the human body begins to change.
propane / LPG
crude oil / petroleum
coal
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
Note oil is not sufficient as it could be
sunflower oil
if more than 3 answers = 0 marks
Further Information
3 each correct answer = 1 mark
Marks
1
Marks
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(b)
(a)
7
Question
6
Question
1113/02
20
20
15
25
A
B
C
D
15
30
30
15
temperature
at end
in °C
exothermic
exothermic
endothermic
(+)10
(+)15
−10
168/409
600 (N)
400 × 1.5 (= 1 × weight of Mia)
Answer
Page 6 of 14
(endothermic)
type of reaction
(-5)
temperature
change
in °C
idea that (C has) the largest temperature change
C
temperature
at start
in °C
reaction
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
2
Marks
correct answer only = 2 marks
Further Information
2 each correct answer= 1 mark
2 each correct column = 1 mark
Marks
October 2020
Combined By NESRINE
8
(ii)
(b)(i)
(a)
Question
1113/02
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for dispersal of offspring / to produce fruits
producing seeds
fertilisation
pollination
any two from
to make food / make glucose / make carbohydrates
for photosynthesis
to absorb (maximum amount of) light
any two from
to absorb minerals / salts / nutrients
to absorb water
(idea of) anchorage
any two from
Answer
Page 7 of 14
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
Accept seed dispersal / description of
seed dispersal = 2 marks
Accept to get pollen / so insects can
reach the reproductive organs
Note reproduction is insufficient
2 each correct answer = 1 mark
Accept to absorb (more) carbon
dioxide as an extra marking point
2 each correct answer = 1 mark
Accept to hold plant in ground / prevent
uprooting
2 each correct answer = 1 mark
Marks
October 2020
Combined By NESRINE
any one from
(b)
(b)
10 (a)
Answer
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PUBLISHED
170/409
sea water has a higher density (than water)
this time plastic will float
pumice (stone) and wood
Answer
Page 8 of 14
wear goggles / glasses / tie (long) hair back / (heat proof) gloves / apron or lab
coat / standing up / use clamps or equivalent to hold apparatus
thermometer
(a)
Question
9
Question
1113/02
Further Information
Accept use tongs to put thermometer
into liquid
Further Information
Accept seawater has greater upthrust
than water
2 each correct answer = 1 mark
either order
1 both required for the mark
Marks
1
1
Marks
October 2020
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(c)
(b)
11 (a)
Question
1113/02
selective breeding / artificial selection
(idea that) do the process for several generations
Page 9 of 14
choose plants with the desired combination of characteristics
(collect seeds and) grow offspring
breed (the selected plants or A and C) together
any two from
A / produces lots of seeds
and
C / does not need much water
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
1 Do not accept (natural) selection
Accept cross pollinate
2 each correct answer = 1 mark
either order
1 both required for the mark
Marks
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rusting
oxygen
destroys the pipe / the pipe might start to leak
(b)
(c)
Answer
Page 10 of 14
Checkpoint Secondary – Mark Scheme
PUBLISHED
12 (a)
Question
1113/02
Further Information
Accept reference to other objects
containing iron
Accept contents inside may be
contaminated
Accepts corrodes away the iron
1 Accept weakens pipe / damages pipe /
makes pipe brittle / pipe need replacing
/ wears down the metal
1 Accept water (vapour)
1 Accept oxidation / corrosion / oxidising
Marks
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(c)
(b)
13 (a)
Question
1113/02
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Page 11 of 14
renewable energy resources save non-renewable energy resources /
renewable fuels save non-renewable fuels
Accept less or no pollution with
renewable resources
renewable energy resources cause little (atmospheric) pollution.
Accept ora if non-renewable resources
specified
1 Note fuel can be used instead of
energy resource throughout the
question
1 more than one answer circled = 0
marks
Accept (more) sustainable
wind
solar
hydroelectric
geothermal
biomass
Further Information
1 Accept any number between 43 (%)
and 49 (%)
Marks
October 2020
(idea that) running out of non-renewable energy resources / so that nonrenewable fuels do not run out
any one from
46 (%)
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
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O
(c)
(d)
Mg or Al or Si or P or S or Cl or Ar
F
(b)
14 (a)
Question
1113/02
Answer
Page 12 of 14
Checkpoint Secondary – Mark Scheme
PUBLISHED
Further Information
Ignore distribution of electrons within
each shell so long as numbers are
correct
1 Accept dots or circles instead of
crosses
1
1
1 Accept Br / I / At
Marks
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Sun
Mars and Moon
(c)
Further Information
Page 13 of 14
Darwin
either order
1 both required for the mark
1
Note lines to two scientists means that
that the idea is incorrect
one incorrect line = max 1 mark
two incorrect lines = 0 marks
Copernicus
Pasteur
one correct = 1 mark
2 two correct = 2 marks
Marks
October 2020
Rutherford
Galileo
Checkpoint Secondary – Mark Scheme
PUBLISHED
Answer
Built a telescope and looked at Jupiter and its
moons. This showed that everything does not
rotate around the Earth.
The first scientist to suggest that the planets
orbited the Sun.
(b)
15 (a)
Question
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(b)
16 (a)
Question
1113/02
Further Information
Page 14 of 14
Do not accept fair test
1 Accept more valid results / able to
calculate an average / to be sure of the
results / to see if the results are correct
/ compare results / more consistent
Accept wooden peg / tweezers /
forceps
When she removes the copper rod she uses tongs / gloves.
spot anomalies / check results / more reliable
Accept copper is a thermal conductor /
she may get burnt / the wax might melt
onto her hand
1 both required for the mark
Marks
October 2020
Aiko must be careful because it is hot.
Answer
Checkpoint Secondary – Mark Scheme
PUBLISHED
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■
•
Combined By NESRINE
Cambridge Assessment International Education
Cambridge Secondary1 Checkpoint
SCIENCE
1113/01
Paper1
April 2019
MARK SCHEME
Maximum Mark: 50
Published
This mark s ,cheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers· meeting before marking began. which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of1 O printed pages.
1819 05_1113_01/4RP
©UCLES 2019
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Combined By NESRINE
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Combined By NESRINE
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Combined By NESRINE
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Cambridge Assessment International Education
Cambridge Secondary 1 Checkpoint
SCIENCE
1113/02
Paper 2
April 2019
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 14 printed pages.
IB19 05_1113_02/3RP
© UCLES 2019
[Turn over
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Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
April 2019
Page 2 of 14
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
note provides extra information when necessary
Annotations and abbreviations
1113/02
Combined By NESRINE
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(many) more yeast (cells) / more cells
cells had divided / reproduced
1(b)(ii)
sensitivity / irritability
movement / can move
excretion
nutrition
growth
reproduction
respiration
any three from
Answer
Page 3 of 14
Further Information
April 2019
1 Accept cells multiplied / yeast increases
/ multiply themselves
1
1 three correct = 1 mark
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
1(b)(i)
1(a)
Question
1113/02
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Answer
190/409
Accept ora if specified
note assume answer refers to hot food if
not specified.
2 note the answer must refer to particles at
least once to get maximum marks
1 more than one answer circled = 0 marks
particles spread out more
particles collide more
Accept spread out faster / particles
diffuse faster
Page 4 of 14
mixing
particles move faster
dissolving
Accept particles have more kinetic
energy = 2 marks
any two from
2(c)
diffusion
April 2019
(idea that) particles will have more energy
absorption
The particles have very little energy.
The particles form a fixed shape.
The particles are only able to vibrate.

Further Information
1 more than one tick = 0 marks
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Forces between the particles are weak.
2(b)
2(a)
Question
1113/02
Combined By NESRINE
mirror
incident ray
normal
3
angle of incidence
Answer
Page 5 of 14
reflected ray
angle of relection
Further Information
one or two correct = 1 mark
three or four correct = 2 marks
3 five correct = 3 marks
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Question
1113/02
April 2019
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4(d)
4(c)
4(b)
4(a)
Question
1113/02
B
B
C
C
D
D
(nucleus of) pollen and (nucleus of) ovule fuse
A
pollen lands on stigma
A
Answer
Page 6 of 14
E
E
Further Information
April 2019
192/409
Accept pollen or male gamete and ovule
form a zygote
Accept gametes fuse / gametes join
together / gametes combine
Accept male gamete for pollen
Accept ‘male sex cell’ for ‘pollen’ and
‘female sex cell’ for ‘ovule’
1 Accept ‘female gamete’ or ‘egg’ for ‘ovule’
1 more than one answer circled = 0 marks
Accept ‘male gamete’ for ‘pollen’
Accept pollen lands on A
1 Accept pollen transferred from one flower
to another / pollen goes from anther to
stigma
1 more than one answer circled = 0 marks
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
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D
Hazard: hot dish / burn hand / the oven is hot.
5(b)
5(c)
193/409
Page 7 of 14
To avoid the hazard Rajiv should wear goggles / safety glasses.
Hazard: getting soil in eyes.
OR
To avoid the hazard Rajiv should use tongs / heat resistant gloves / let
the dish cool before picking it up.
(electronic) balance
Answer
Further Information
April 2019
Hazard bacteria from soil / insects in
soil / infection from soil / toxic
(minerals in) soil.
To avoid the hazard Rajiv should wear
goggles / safety glasses / gloves.
OR
Accept
Hazard idea of heat damage to
clothes.
To avoid the hazard Rajiv should wear
lab coat.
note two marks can only be awarded by
a hazard and a linked precaution
2 note
hazard = 1 mark
how to avoid the hazard = 1 mark
1
Do not accept weighing balance or
weighing scales
1 Accept scale(s) / beam balance / triple
beam balance
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
5(a)
Question
1113/02
Combined By NESRINE
7
Question
6
Question
1113/02
blue
Answer
green
red
magenta
194/409
Page 8 of 14
When carbonates react with acid the products are a salt, water and
carbon dioxide.
When metals react with acid the products are a salt and hydrogen.
cyan
white
yellow
Answer
Further Information
Further Information
April 2019
water and carbon dioxide in either order
3 each missing substance = 1 mark
Marks
one correct = 0 marks
two or three correct = 1 mark
four correct = 2 marks
2 note only accept these colours
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
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any one from
8(b)
Answer
195/409
Page 9 of 14
idea of difficult to be sure that you have not counted same bird twice or
some not at all
impossible to count them all / too many / over too large an area
out at different times of day
(rapid) birth / death
Further Information
1
April 2019
Accept cannot find them as they are in
different places / not all birds seen
1 Accept to work out an average
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
birds are (too) mobile / immigration / migration / fly away
to obtain reliable results
8(a)
Question
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Answer
Answer
H
Na
9(b)(ii)
Page 10 of 14
The nucleus is surrounded by particles called electrons.
The nucleus of the atom contains protons and neutrons.
pollution
time of year / season
disease
climate (change)
pest control (trapping / shooting / use of poisons)
competition
predation / hunters
1
1
April 2019
Further Information
Accept reproduction (rate) / birth rate /
death rate
Accept competition for a named factor
e.g. nesting sites or shelter
Further Information
3 either order
each correct answer = 1 mark
Marks
2
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
food (supply) / damage to food chains / amount of prey
habitat (destruction)
any two from
9(b)(i)
9(a)
Question
8(c)
Question
1113/02
Combined By NESRINE
mouse, rabbit and grasshopper
the hawk feeds at more than one trophic level / can be a tertiary consumer
hawk
any one from
10(b)
10(c)
10(d)
10(e)
197/409
Page 11 of 14
stay the same – idea that more grass to eat AND more predation by
hawks will even out
go down – lack of rabbits means hawks will need to eat more mice
go up – more grass to eat / less competition (by rabbits) for food
the transfer of energy
Answer
Further Information
April 2019
1 mark the change and the linked reason
1
1 Accept it eats (both primary and)
secondary consumers
1 all three required
1 Accept energy transfer / energy flow
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
10(a)
Question
1113/02
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11(b)
11(a)
Question
1113/02
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(%) of hydroelectric increase
Page 12 of 14
(%) of (other) renewables increase / example of renewable increasing e.g.
tidal increases
(%) of natural gas decrease
(%) of oil decrease
(%) of coal decrease
any three from
tidal
biofuel / biomass
geothermal
wave
wind / (a)eolic
sun / solar
any two from
Answer
April 2019
Further Information
Accept (%) of nuclear (may) increase / (%) of
nuclear (may) decrease
3 Accept (%) of fossil fuels or non-renewables
will decrease if no marks awarded for coal, oil
or natural gas
Accept wood
Do not accept nuclear
1 two correct = 1 mark
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
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12(b)
12(a)
Question
1113/02
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Page 13 of 14
divides / the lamps are still in a complete circuit / it is a
parallel circuit / electrons can flow / the circuit still
transfers electrical energy.
This is because there is current to each lamp / current
In circuit B the lamps work.
is a series circuit / electrons cannot flow / the circuit
does not transfer electrical energy.
This is because there is no current / a gap in the circuit / it
In circuit A the lamps do not work.
The electrical circuit symbol for this component is
Name of this electrical component is a battery.
correct two answers for B = 1 mark
2 correct two answers for A = 1 mark
correct symbol = 1 mark
The electrical circuit symbol for this component is
or
April 2019
Further Information
2 correct component = 1 mark
Marks
The name of this electrical component is a cell.
Answer
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Combined By NESRINE
14
Question
13(c)
13(b)
13(a)
Question
1113/02
calcium oxide
calcium hydroxide
calcium hydrate
calcium chloride
calcium carbonate
200/409
so less pressure / so low pressure
pencil has large(r) area
Answer
Page 14 of 14
(idea that) too reactive / not safe / may burst into flames
hydrogen
Answer
Marks
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Guidance
Accept pressure is force / area as an
equation or in words = 2 marks
Accept ora if pin specified
2 note assume answers refer to pencil
1
1 more than one circled = 0 marks
1
Guidance
April 2019
Combined By NESRINE
Combined By NESRINE
Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
1113/01
SCIENCE
October 2019
Paper 1
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 12 printed pages.
IB19 10_1113_01/4RP
© UCLES 2019
[Turn over
201/409
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
October 2019
Page 2 of 12
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
Note provides extra information when necessary
Annotations and abbreviations
1113/01
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1(b)(i)
1(a)
Question
1113/01
203/409
Page 3 of 12
no nucleus = 1 mark
to carry more oxygen / more space for haemoglobin = 1 mark
OR
large surface area (to volume ratio) / biconcave / thin membrane /
permeable membrane = 1 mark
to absorb oxygen quickly / to absorb oxygen easily / more oxygen
diffuses / to allow oxygen to enter more easily = 1 mark
OR
flexible / rounded shape / small = 1 mark
to pass through capillaries / to pass through narrow blood vessels = 1
mark
OR
contains haemoglobin = 1 mark
to carry oxygen = 1 mark
any one from
because it is made up of several different tissues
organ
Answer
Marks
Further Information
October 2019
how the structure is related to function = 1 mark
2 structural feature = 1 mark
Accept contains more than one type of cell
2 Note if not organ = 0 for the question
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2(c)
diffusion
Page 4 of 12
because particles move faster / hit sides of bottle harder / more
collisions with bottle / particles have more energy
increases
2(b)
Answer
idea of (gas) particles colliding with the bottle
which can contract
(long) fibre
Answer
Marks
Marks
October 2019
Further Information
1
2
Note this marking point is independent of the first
marking point
1 Accept particles hit the bottle / particles bounce off
bottle
Further Information
how structure relates to function = 1 mark
2 structural feature = 1 mark
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
2(a)
Question
1(b)(ii)
Question
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4(b)
4(a)
Question
3
Question
1113/01
Page 5 of 12
has 8 legs / 4 pairs of legs / body divided into 2 main parts / lacks
antennae
C (does the animal have) 1 pair of legs per segment? / ‘feelers’ on its
‘tail’ idea?
B (does the animal have) wings?
A (does the animal have) 6 legs? / 3 pairs of legs? / 3 body sections?
Answer
The amplitude of the sound stays the same.
The volume of the sound stays the same.
The frequency of the sound decreases.
The pitch of the sound decreases.
Answer
Marks
Marks
October 2019
Further Information
1
Note question requires a yes answer for the
centipede
Accept are there stripes on the body?
Note question requires a yes answer for the bee
3 Note question requires a yes answer for the
insects (ants and bees)
Further Information
4 each correct sentence = 1 mark
Checkpoint Secondary 1 Science – Mark Scheme
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large (dorsal) fin / long (dorsal) fin
streamlined (body) / long and thin (body)
(long) muscular body
large teeth / sharp teeth
Page 6 of 12
any two from
6(b)(ii)
large powerful jaws
(black colour means) it can hunt without being seen / cannot be seen
by prey
6(b)(i)
Answer
carbon sulfate
(very) large eyes / big eyes
any value from 3–6
carbon hydroxide
carbon dioxide carbon carbonate
C
Answer
Marks
Marks
Further Information
October 2019
Accept long and narrow / long and slim
Accept large mouth
2 Ignore reference to tail
1 Accept camouflaged / blends in with
surroundings / difficult to be seen
1 Ignore has night vision
Further Information
1 Accept a range providing it is inclusive of range
in mark scheme
1 more than one circle = 0 marks
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
6(a)
Question
5(b)(ii)
5(b)(i)
5(a)
Question
1113/01
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As the speed increases by 16 km/h the thinking distance increases
7(b)
thinking distance
7(d)
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more than doubles
stopping distance
more than doubles
braking distance
doubles
24 (m)
7(c)
Page 7 of 12
by 3m (each time) / equally / by the same amount
96 (m)
Answer
Marks
Further Information
one or two correct = 1 mark
2 three correct = 2 marks
1
2
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
7(a)
Question
1113/01
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8(c)
tube B
(idea that) there is no air or oxygen present (in the water)
8(b)
208/409
Page 8 of 12
(idea that) destroys or damages object (made of iron or steel) /
weakens objects (made of iron or steel) / rusting does not look nice /
need to regularly replace object (made of iron or steel)
tube C
(idea that) there is no water present
oxygen
Answer
Marks
Accept water has been removed / the tube is dry
Accept very little air or oxygen in the tube
Accept oil stops air or oxygen from entering / oil
blocks oxygen
Further Information
October 2019
Accept becomes brittle / rust increases friction (in
machines)
1 Note answer does not have to mention iron or
steel but if a named metal is given it must be iron
or steel
2
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
8(a)
Question
1113/01
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9
Question
1113/01
turn the (cell) battery around
remove the switch
remove the iron nail
Page 9 of 12
four or more answers = 0 marks
one correct answer and two incorrect answers =
0 marks
change the iron nail to a wooden pencil
one correct answer and one incorrect answer = 1
mark
2 two correct answers = 2 marks
Further Information
two correct answers and one incorrect answer =
1 mark
Marks
October 2019
add more coils to the insulated wire
add another switch
add another cell (battery)
Answer
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any two from
10(b)
anchor muscles
support
movement (of joints)
protection (of internal organs)
bone
10(a)
Question
1113/01
Answer
Page 10 of 12
Marks
Further Information
October 2019
2
Accept storage for minerals e.g. calcium or
phosphate
1 Do not accept ligament / muscle / bone marrow
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11(b)
11(a)
Question
1113/01
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Accept magnesium is more reactive than zinc /
ora
magnesium is the fastest / zinc is slower than magnesium
Page 11 of 12
Note just quoting times is not sufficient
comparison involving rate = 1 mark
comparison involving time = 1 mark
2 Note if yes = 0 marks for the question
October 2019
zinc does not take the shortest time (to make 50 cm3 of gas) /
magnesium takes the shortest time (to make 50 cm3 of gas)
no (no mark)
variable measured = 1 mark
D / time to make 50 cm3 of gas
4 variable changed = 1 mark
Further Information
all correct in any order = 2 marks
but two correct = 1 mark
one correct = 0 marks
Marks
B and C and E
A / the metal used
Answer
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12(b)
12(a)
Question
1113/01
Earth is spinning / Earth is rotating
stars
3. Sun
2. Neptune
1. Venus
Answer
Page 12 of 12
Marks
Further Information
2
Accept Earth is moving
one or two correct = 1 mark
2 three correct = 2 marks
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Cambridge Assessment International Education
Cambridge Secondary 1 Checkpoint
1113/02
SCIENCE
October 2019
Paper 2
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 14 printed pages.
IB19 10_1113_02/5RP
© UCLES 2019
[Turn over
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Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
October 2019
Page 2 of 14
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
Note provides extra information when necessary
Annotations and abbreviations
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2(b)
2(a)
Question
1113/02
Animals did not live in areas where
metamorphic rocks were formed.
Metamorphic rocks are formed when molten
rock cools.
Metamorphic rocks were formed before there
was life on Earth.
Metamorphic rocks are formed under high
temperatures and pressures.
A
Answer

Page 3 of 14
Marks
October 2019
Further Information
1 more than one box ticked = 0 mark
1 Accept top layer
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3(b)
3(a)
Question
1113/02
9(.0) (g/cm3)
450
50
density = mass
volume
sodium
magnesium
iron
copper
aluminium
Answer
Page 4 of 14
Marks
October 2019
Further Information
1 more than one answer = 0 marks
3 correct answer on own = 3 marks
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5
Question
4
Question
1113/02
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Page 5 of 14
in both males and females
growth of body hair / enlargement of sex organs / teenage spots /
growth spurt
only in females
menstruation / ovulation / develop breasts / hips widen
only in males
voice breaks / produces sperm / grows beard / facial hair
Answer
Do not accept any marking point from the both
males and females list
Accept has period / eggs released / menstrual cycle
/ growth of ovaries
Do not accept any marking point from the both
males and females list
3 Accept voice gets deeper / voice gets lower / bigger
Adam’s apple / shoulder broaden / starts ejaculation
/ scrotum enlarge / testes enlarge / penis enlarge
Further Information
Accept green filter absorbs red light
green filter only lets green light through / green filter absorbs all light
except green
3 Accept no colour / black / nothing
Further Information
Accept red filter absorbs blue and green / red filter
transmits red light
Marks
Marks
October 2019
red filter only lets red light through / red filter absorbs all light except
red
and for one mark each:
(idea of) no light / darkness
Answer
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6(b)
6(a)
Question
1113/02
36.9
36.8
36.7
36.6
temperature
o
in C
36.8
I
IIII
tally
(0)
(0)
1
4
number of
students at
this
temperature
Answer
Page 6 of 14
Marks
Further Information
October 2019
Accept ecf for the number of students from the tally
column
Accept ecf from (a) for the tally column
2 each correct column = 1 mark
1 Accept any value between 36.75 to 36.85 inclusive
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6(c)
Question
1113/02
219/409
Page 7 of 14
correct bars that occupies roughly half or more of the grid / correct
frequency graph shown as a smooth curve that occupies at least half
or more of the grid = 1 mark
one mark for bars or graph
OR
x-axis and y-axis labels correct = 1 mark
x-axis and y-axis have a linear scale = 1 mark
EITHER
x axis and linear scale correctly labelled – temperature in C = 1 mark
y axis and linear scale correctly labelled – number of students, #
students or tally = 1 mark
Two marks maximum for the axes and scales
Answer
Marks
Further Information
October 2019
0
0
1
4
7
5
2
1
36.6
36.7
36.8
36.9
37.0
37.1
37.2
37.3
Do not accept a graph that is dot to dot
Note numbers must be in the middle of the bar
Accept ecf from tally chart
Accept a vertical line as a very narrow bar
Accept one error in the plotting of points or bars
Ignore any numbers at the origin in term of the linear
scale
Accept axes reversed
number of students
temperature in C
o
3 Note the correct values for the graph are shown in
the table
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
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protons
7(a)(ii)
Answer
radon
increases
7(b)(i)
7(b)(ii)
Page 8 of 14
Marks
Further Information
October 2019
1
1
Do not accept circles on the inner circle but they
can just touch the inner circle
Accept any colour other than black and any size – if
black the circle must be either labelled or clearly
different to the original black circles on the question
paper
2 Accept electrons if answer to 7(a)(i) is incorrect
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
two circles drawn inside the inner circle
electrons
7(a)(i)
Question
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Accept angle of reflection is the same for each ray
with a smooth surface / ora for rough surface
Accept reflections are scattered with rough surface /
reflections irregular for rough surface / reflections are
random for rough surface / ora for smooth surface
1 Accept reverse argument
(idea that) for the smooth surface all the rays are parallel / rays are
lined up / the rays that hit and leave the surface are all in the same
direction
8(b)
Page 9 of 14
October 2019
Further Information
1 Accept incident
Marks
The angle of reflection equals the angle of incidence.
Answer
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8(a)
Question
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9(b)
9(a)(ii)
9(a)(i)
Question
1113/02
(needed before) fertilisation can take place
(idea of) male gamete has to meet female gamete
any one from
(idea of) growing a (pollen) tube
(idea of) spikes increase surface area
Page 10 of 14
October 2019
Further Information
Accept so gametes can fuse / so pollen can meet
ovule / so it can form a zygote / so pollen can enter
the ovary / so male sex cell can meet the female sex
cell
2 Accept (pollen) germination
1
any one from
(idea of) spikes hook on to insect’s body
1
Marks
anther
Answer
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11
Question
10(b)
10(a)
Question
1113/02
Answer
sediments
top soil
sandy soil
C
humus
loam soil
B
223/409
This process is called convection.
At B cool air sinks because it is more dense.
At A warm air rises because it is less dense.
deposits
clay soil
A
Answer
Page 11 of 14
Marks
Marks
Ignore heavy
Further Information
If two lines come from a letter then the answer for
that letter is incorrect.
one or two correct = 1 mark
3 Ignore light
1
October 2019
Further Information
2 all correct = 2 marks
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13
Question
12
Question
1113/02
trapped air is a good radiator
Page 12 of 14
trapped air is a good insulator
trapped air is a good convector
trapped air is a good conductor
Answer
hydrochloric (acid)
sulfuric (acid)
nitric (acid)
(acid)
Answer
Marks
Marks
October 2019
Further Information
1 more than one answer circled = 0 marks
Further Information
Accept correct formulae, HNO3, H2SO4, HCl
Accept hydrogen nitrate / hydrogen sulfate /
hydrogen chloride
one or two correct = 1 mark
2 all correct = 2 marks
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15(b)
15(a)
Question
14
Question
1113/02
sampling the plants
growing in an area of
grassland
quadrat
frame
Answer
sampling aquatic
insects living in
a small stream
pitfall
trap
net
collecting ground
dwelling animals
which are active and
hunt at night
Activity
Accept volts / potential difference
This component measures voltage across the lamp.
2 three correct = 2 marks
Accept amps / amperes
one or two correct = 1 mark
2 three correct = 2 marks
Further Information
one or two correct = 1 mark
one or two correct = 1 mark
Page 13 of 14
October 2019
Further Information
2 three correct = 2 marks
Marks
Marks
The component shown by V is a voltmeter.
The circuit diagram shows a parallel circuit.
This component measures current.
The component shown by A is (an) ammeter.
The circuit diagram shows a series circuit.
cup
Apparatus
Answer
Checkpoint Secondary 1 Science – Mark Scheme
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16(c)
(copper is) more reactive than silver / silver is lower in the reactivity series
(than copper)
16(b)
copper nitrate and silver
Page 14 of 14
(copper is) less reactive than lead / lead is higher in the reactivity series (than
copper)
potassium / sodium / calcium
Answer
Further Information
October 2019
either order
1 both needed for mark
2 Accept copper is between lead and
silver in reactivity series = 2 marks
1
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
16(a)
Question
1113/02
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Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
SCIENCE
1113/01
Paper 1
April 2018
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 12 printed pages.
IB18 05_1113_01/2RP
© UCLES 2017
[Turn over
227/409
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
April 2018
© UCLES 2018
Page 2 of 12
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
note provides extra information when necessary
Annotations and abbreviations
1113/01
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228/409
© UCLES 2018
1
Question
1113/01
229/409
uses light energy
to make food
transports oxygen
around the body
contracts to cause
movement
absorbs water and
mineral salts
cell function
Answer
Page 3 of 12
type of cell
Marks
Further Information
April 2018
Note if 2 lines from one ‘function box’ or 2 lines to
one ‘cell type box’ then award no marks for the 2
lines even if one is correct.
4 each correct line = 1 mark
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Combined By NESRINE
© UCLES 2018
2
Question
1113/01
a girl running
food
kinetic
(light)
sound
thermal
(also called
radiant energy)
energy of
moving objects
energy released
by vibrating
objects
stored energy
230/409
Page 4 of 12
(the Sun)
a boy talking
a fire
chemical
also called
heat energy
example
type of energy
description
Answer
Marks
Further Information
one correct match = 0 marks
two or three correct matching = 1 mark
four correct matching = 2 marks
last two columns
one correct match = 0 marks
two or three correct matching = 1 mark
four correct matching = 2 marks
4 first two columns
Checkpoint Secondary 1 Science – Mark Scheme
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6
igneous (rock)
3(b)(ii)
3(c)
231/409
© UCLES 2018
4
C = diaphragm
B = bronchus
A = trachea
3
3(b)(i)
Question
A
Answer
Answer
Page 5 of 12
Marks
Marks
Further Information
3
April 2018
Ignore magma
Further Information
Ignore intrusive or extrusive
Accept pumice / basalt / granite / obsidian
1 Accept magmatic (rock)
Accept scratched by steel file
1 more than one answer = 0 marks
Accept scratched by copper coin
1 more than one answer = 0 marks
1 more than one answer = 0 marks
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3(a)
Question
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6(b)
6(a)
B blue
A blue
B no light
A red
Page 6 of 12
This is because the reaction is endothermic.
5(c)
Answer
The reaction between iron and copper sulfate to
form iron sulfate and copper is called
displacement.
5(b)
Question
The reaction between an acid and an alkali is
called neutralisation.
Answer
Marks
Marks
Further Information
Further Information
2 each correct colour = 1 mark
Accept black / no colour
2 each correct colour = 1 mark
1
1
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
5(a)
Question
1113/01
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any one from
7(a)(ii)
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any one from
7(b)
Page 7 of 12
you would expect chicken’s heart rate to be between
150 and 205 bpm given its mass
you would expect the chicken to have a smaller mass
than the rabbit given its heart rate
(idea that) a chicken is a bird / chicken is not a mammal
use of a line graph / bar chart / bar graph
7(a)(iii)
cat (1) its heart rate is too low for its mass (1)
or
monkey (1) its heart rate is too high for its mass (1)
as the mass increases the heart rate decreases /
negative correlation between body mass and heart rate
Answer
Marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
7(a)(i)
Question
1113/01
1
Accept recognise that it has a different
metabolism or physiology
1 Accept scatter graph
Accept reverse argument
the answer must refer to both mass and heart
rate
2 the reason is dependent on the correct animal
1 Accept ora
Further Information
April 2018
Combined By NESRINE
© UCLES 2018
(idea of) adding litmus or pH indicator or pH
solution or pH paper or Universal Indicator
(solution)
8(b)
Page 8 of 12
correct colour of named indicator in acid –
dependent on name of correct indicator
(idea of) to check whether it is correct
Answer
Marks
2
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
8(a)
Question
1113/01
Accept other named indicators with correct colour in
acid
(Litmus) turns red
(pH / Universal) turns red or orange or yellow
Further Information
April 2018
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The volume of water in the measuring cylinder is
21 cm3.
9(b)
235/409
© UCLES 2018
9(c)
mass of each ball is small / not very accurate to
measure small mass / to increase the accuracy /
reduces error / makes results more reliable
9(a)(ii)
2 (g / cm3)
Page 9 of 12
The volume of one ball is 1.5 cm3.
The difference in volume between these two
readings is 15 cm3.
The volume of the water and 10 balls in the
measuring cylinder is 36 cm3.
3 (g)
Answer
Marks
Further Information
April 2018
1 Accept ecf from (a) and (b) for mass and volume
measurements
Accept ecf for the difference in volume between the
candidates two readings e.g. if readings are 20 and
37 then difference is 17 and volume of 1 ball is 1.7
one reading correct = 0 marks
two or three readings correct = 1 mark
2 four readings correct = 2 marks
1 Accept so all balls have the same mass / so it is fair
1
Checkpoint Secondary 1 Science – Mark Scheme
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9(a)(i)
Question
1113/01
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species A = akiapolaau
10(b)
236/409
Rutherford
3
(good) conductor of electricity
aluminium oxide
11(b)
11(c)
11(d)
11(e)
© UCLES 2018
13
Answer
11(a)
Question
(Charles) Darwin
10(a)(ii)
species D = Nihoa finch
natural selection
Answer
Page 10 of 12
Marks
Marks
Further Information
Further Information
April 2018
1
1 Accept ductile / flexible / malleable / low density
1 Accept 13 / III / 3rd group
1
1
2
1
1 Accept evolution
Checkpoint Secondary 1 Science – Mark Scheme
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10(a)(i)
Question
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13
Question
12
Question
1113/01
carbon dioxide
water
Answer
convection
.......................................................................................
.
thermal energy lost by air movements by
radiation
..........................................................................................
.
thermal energy lost from surface of skin by
Answer
Page 11 of 12
conduction
..........................................................................
.
thermal energy gained from rock by
Marks
Marks
Further Information
either order
2 each correct answer = 1 mark
Further Information
one or two correct = 1 mark
2 three correct = 2 marks
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
April 2018
Combined By NESRINE
© UCLES 2018
14
Question
1113/01
time taken (for experiment)
temperature
size of the water plant
the same type of water plant
light source / lamp
any two from
Answer
Page 12 of 12
Marks
2
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Accept volume of water / amount of water / mass
of water / level of water
Accept the amount of carbon dioxide /
concentration of carbon dioxide / mass of carbon
dioxide
Accept same number of leaves / same mass of
water plant
Accept light intensity / distance from beaker or light
Further Information
April 2018
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Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
SCIENCE
1113/02
Paper 2
April 2018
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 16 printed pages.
IB18 05_1113_02/RP
© UCLES 2017
[Turn over
239/409
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
April 2018
©UCLES 2018
Page 2 of 16
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
note provides extra information when necessary
Annotations and abbreviations
1113/02
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needed for respiration
provides (lots of) energy
Page 3 of 16
any two from
1(b)
©UCLES 2018
muscle is made of protein / needed for growth /
needed for repair
1(a)(ii)
(idea of) contains carbohydrate
protein
Answer
Marks
Further Information
April 2018
2
Accept contains carbs / (starch) broken down into
glucose or sugar
Accept for cell division / make new cells /
regenerate muscles quicker
1 Accept develops muscle / strengthens muscles / for
muscles
1 Note if more than one food group given = 0 for the
question
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
1(a)(i)
Question
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242/409
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2(b)
2(a)
Question
1113/02



Page 4 of 16
particles have moved closer together / distance
between particles is smaller
(idea of) forces between particles increase /
greater attraction between particles
April 2018
Accept intermolecular forces increase or get bigger
2 Note the answer should refer to particles, atoms or
molecules
four or five ticks = 0 marks


three ticks and two correct = 1 mark
2 each correct tick = 1 mark
Further Information
three ticks and one correct = 0 marks
Marks



particles lose energy / (some) particles have less
kinetic energy / (some) particles move slower
any two from
The particles in a gas can only vibrate.
The particles in a gas are close together.
The particles in a gas are arranged randomly.
Gases only form at temperatures above 100°C.
Gases can flow to fill a container.
Answer
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
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3
Question
1113/02
Page 5 of 16
The sound with a smaller amplitude than A is C.
The sound with a smaller frequency than A is D.
B.
The sound with a larger volume (louder) than A is
The sound with a higher pitch than A is E.
Answer
Marks
Further Information
4 each correct sentence = 1 mark
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©UCLES 2018
4(a)
Question
1113/02
long tail (for balance)
big legs / strong legs / long legs
Page 6 of 16
large snout / large nose (suggesting a keen sense
of smell)
long fingers (to grasp trees)
large ears / ears on side of head (for sensitive
hearing)
forward facing eyes (for 3D vision)
large eyes / wide eyes (to gather max light)
any three from
Answer
Marks
Further Information
Accept muscular legs
Accept large hands / large paws
3 features must be visible in the diagram
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Page 7 of 16
reduce tourism in unprotected areas
research into causes of decline
to prevent poaching
increase education / idea of increase awareness /
increase publicity
create new habitats / avoids habitat destruction /
control (number of people) destroying wild
habitats
idea that can improve the health of the tarsiers /
can provide food
for a breeding program / can release more into
the wild / help improve chances of breeding
maintain the nature reserve / improve the nature
reserve / money used to build more reserves
(money can be used to:)
any two from
2
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Question
5(c)
5(b)
5(a)
Question
1113/02
(0)
(6)
15
3
metal
A
B
C
D
Answer
Page 8 of 16
there were more bubbles in the tubes
and
yes
use a smaller piece of metal
repeat the experiment the same way
collect the gas in a test tube
collect the gas in a measuring cylinder
number of bubbles
Answer

Marks
Marks
Further Information
April 2018
Further Information
yes unqualified = 0 marks
1 no = 0 marks
1 more than one box ticked = 0 marks
15 and 3 in correct place = 1 mark
Accept bubbles produced / count of bubbles
produced / bubbles of incorrect gas produced
2 correct heading = 1 mark
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6(b)
6(a)
1113/02
light from the Sun
light reflected (off the comet)
star
planet
Moon
Earth
asteroid
Page 9 of 16
April 2018
Accept light from a star
2 Accept reflected sunlight = 2 marks
1 more than one answer circled = 0 marks
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Question
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(idea that) animals the humans brought had
diseases
(idea of) it couldn’t fly to escape the new animals
that were introduced / it could not fly to move to a
new habitat
(idea that) they lost their habitat / no nesting sites
(idea that) new animals were predators of dodo
Accept humans killed dodos
(idea of) they were hunted by humans
2 each correct answer = 1 mark
Further Information
Accept new animals or humans destroy eggs
Marks
April 2018
(idea of) the new animals ate their eggs / attacked
their nests
(idea of) the new animals ate their food
(idea of) they were not afraid of humans so they
were easy to catch
any two from
Answer
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Question
8(c)
8(b)
8(a)
Question
1113/02
the wax catches fire
Page 11 of 16
the pins are sharp / risk of getting skin wound
the apparatus gets hot / risk of getting burnt
any two from
Answer
increases / get more reactive
only contains one type of atom
lithium
lithium hydroxide + hydrogen
lithium + water
Answer
Marks
Marks
Further Information
April 2018
2
Further Information
Accept francium will be the most reactive / sodium is
the least reactive
1 Accept becomes more vigorous
2 Note if lithium hydroxide or water = 0 for the
question
hydrogen as one product = 1 mark
lithium hydroxide as one product = 1 mark
3 reactants in either order = 1 mark
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Question
10(b)
10(a)
Question
1113/02
particle Z = protons
particle Y = neutrons
Answer
Page 12 of 16
pollen (grains) going to the stigma of a flower
transfer of pollen (grains from the anther)
attracted to the scent / attracted to the smell
flowers look like (female) fly (from a distance)
(idea that) smell carried (long distances) in air
currents
they are looking for a mate
any two from
Answer
Marks
Marks
Accept they think the flowers are (female) flies
Further Information
April 2018
2 Accept Z = neutrons and Y = protons = 1 mark
Further Information
Accept to transfer pollen from anther to the stigma =
2 marks
2 Accept the transfer of pollen from one flower to
another flower = 1 mark
2
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13
Question
12
Question
1113/02
Answer
water / carbon dioxide
weight of A = 6 (N)
Answer
Page 13 of 16
Marks
Marks
Further Information
April 2018
Further Information
Ignore chloroplast
1 Accept chlorophyll
3×4=2×A
or
12 = 2 × A
or
3× 4
=A
2
or
12
=A
2
if incorrect answer, accept correct method for 1
mark, e.g.
2 correct answer = 2 marks
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15
Question
14
Question
1113/02
C Neptune
B Uranus
A Jupiter
Page 14 of 16

The force of attraction is greater at the poles than in
the middle of the magnet.
Answer


Magnets attract iron, cobalt and nickel.
Magnets do not work if they are in water.
Magnets always have N and S written on them.
Like poles of magnets repel.
Answer
Marks
Marks
Further Information
1 all three correct = 1 mark
Further Information
four ticks, three correct = 1 mark
one correct tick = 0 marks
two correct ticks = 1 mark
2 three correct ticks = 2 marks
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16(b)
16(a)
Question
1113/02
ammeter
Page 15 of 16
series circuit with open switch
parallel and series circuit with open switch
parallel circuit with open switch
series circuit with closed switch
parallel circuit with closed switch
Answer
Marks
Further Information
April 2018
1
1 more than one answer circled = 0 marks
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Question
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Accept the time for B is double that of A but
distance travelled by B is trebled = 1 mark
in 60 seconds A travels 80 m and B (is faster)
since travels 120 m = 1 mark
one or two calculations = 1 mark
2 three calculations = 2 marks
Further Information
Accept speed = distance ÷ time, 120÷ 60 is bigger
than all the others = 1 mark
Marks
April 2018
B (is faster than) C because in same time travels
further = 1 mark
if no calculations done
or
(C) 30 / 60 = 0.5 (m / s)
(B) 120 / 60 = 2 (m / s)
(A) 40 / 30 = 1.33 (m / s)
Answer
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Cambridge Secondary 1 Checkpoint
1113/01
SCIENCE
Paper 1
October 2018
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 11 printed pages.
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Page 2 of 11
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
note provides extra information when necessary
Annotations and abbreviations
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Metamorphic rocks form when other rocks are changed by
2(b)
© UCLES 2018
sandstone
2(a)(ii)
heat and pressure.
found in the bottom layer (that contains fossils) / layer D is at the
bottom / layer D is the deepest (that contains fossils)
Answer
2(a)(i)
Question
has a cell wall could be a plant cell / has a (large) vacuole could
be a plant cell
1(b)
lacks chloroplasts could be an animal cell
cell wall
1(a)
Marks
Further Information
October 2018
2
1
1
either order
Further Information
Accept animal cells do not have a cell wall
2 Accept has structure X so could be a plant cell
1
Answer
Question
Marks
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pollination
fertilisation
4(b)
4(c)
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pollen
4(a)
Question
3
N
S
(N)
Answer
S
S
Page 4 of 11
Marks
Further Information
Further Information
1
1 Ignore cross or self
1
October 2018
Ignore any labels unless the boxes are empty
two or three correct = 1 mark
2 four correct = 2 marks
Answer
Question
Marks
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measure the temperature after adding the metal
Page 5 of 11
measure the temperature (before adding the metal)
5(d)
copper
exothermic
least reactive
iron
zinc
copper
+
iron sulfate
most reactive
copper sulfate
+
iron
5(c)
5(b)
5(a)
all correct = 1 mark
correct products (either order) = 1 mark
correct reactants (either order) = 1 mark
Further Information
October 2018
Accept measure the temperature over time = 2 marks
2 Accept measure the temperature change = 2 marks
1
1
2
Answer
Question
Marks
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7(b)
7(a)
Question
6
Accept explanation of not controlling the variable
given
‘fair test’ / eliminate effect of other variables / so results can be
compared
Page 6 of 11
marking point 2 is not dependent on marking point 1
October 2018
explanation
(same) starting temperature of water
(same period of) time
Accept (same) type of test-tube
(same) sized tubes / (same) amount of water / (same) material for
tubes / (same) volume of water
2
2
Further Information
Accept in draught free conditions
Marks
2 each correct sentence = 1 mark
Further Information
(same) external temperature / (same) temperature of
surroundings
any one variable from
stopwatch / clock / timer
thermometer
Answer
At A and B the wave has the same frequency.
At A the wave has the highest amplitude.
Answer
Question
Marks
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A and C
8(b)
did not take on the shape of the beaker
Page 7 of 11
(idea that) could not fill the syringe with the substance
then any one from
D
could be squashed (in the syringe) / only gases can be
compressed
8(a)
October 2018
note marking point 2 dependent on correct letter
Further Information
Accept have a fixed shape / maintain their shape
Note second marking point dependent on correct
letters
2 both correct = 1 mark
2
Answer
Question
Marks
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9(b)
9(a)
Question
1113/01
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1.2 is the lowest density / other boxes have a higher density
A is the largest box / the density of the largest box is 1.2
explanation:
no
all the densities of green boxes are higher than the densities of
the red boxes / the average density of green boxes is higher than
the average density of the red boxes = 2 marks
but
the largest density for a red box is 6.3 = 1mark
2
Accept D has the highest density and lowest volume
/ A has the largest volume but the smallest density =
2 marks
Accept the largest box has a volume of 15 cm3
each correct explanation = 1 mark
if answer is yes = 0 marks
no mark for just stating that the prediction is wrong
Accept the total density of the green boxes is higher
than the total density of the red boxes = 2 marks
note the explanation must involve use of the data in
the table and not just restate the statement
the green boxes have densities 7.2 9.8 and 6.4 = 1 mark
2 no mark for just stating that the statement is correct
Further Information
if answer is no = 0 marks
Marks
October 2018
explanation:
yes
Answer
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has 4 electrons in outer shell
get bigger / gets larger / increases
11(b)
11(c)
© UCLES 2018
electron(s)
Answer
Their offspring would all be able
to have young.
They live in the same habitat.
They share similar features.
They can all breed with each other.
They all eat the same food.
Answer


Page 9 of 11
Marks
Marks
October 2018
Further Information
four or five ticks = 0 marks
one correct tick and two incorrect ticks = 0 mark
two correct ticks and one incorrect tick = 1 mark
only one tick = 1 mark if correct
two correct ticks = 2 marks
Further Information
1 Ignore heavier
Accept 4 electrons in the valence shell / 4 valence
electrons
1 Accept 4 electrons on outer ring
1
2
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Question
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Question
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13(b)
13(a)
Question
12
Question
1113/01
blue
Answer
red
magenta
by otters eating the perch
reduce numbers of fish
C = water fleas and D = mosquito larvae
B = pike
A = otter
cyan
green
(yellow)
Answer
Page 10 of 11
Marks
Marks
water fleas and mosquito larvae can be either way
round
both required
Further Information
Note these are the only acceptable colours
each correct colour in correct box = 1 mark
Further Information
October 2018
Accept otters eat fish / otters are predators of perch
otters are predators of fish / otters kill perch or fish
2 Accept pike have less food and starve
3
2
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15(b)
15(a)
Answer
Answer
they should
(idea of) repeat the reading
Anomalous reading
30 or 0.35
correct plots seen for
(40,0.28) and (50,0.22)
y axis – voltage in V
and
x axis – length in cm
reflects light from the Sun
14(b)
Question
Mercury and Venus
14(a)
Question
Page 11 of 11
Marks
Marks
Further Information
2 Accept third one
Ignore any attempt at line of best fit or joining the
plots
plots correct to half a small square
needs both label and the unit
both axes required for 1 mark
2 Accept voltage / V
Accept voltage with V in brackets
Accept length / cm
Accept length with cm in brackets
1
1 both required in either order
Further Information
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Cambridge Secondary 1 Checkpoint
1113/02
SCIENCE
Paper 2
October 2018
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 11 printed pages.
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1
Question
1113/02
transports water and
minerals
absorbs water and
minerals from soil
function
Answer
Page 2 of 11
plant cell
Marks
2
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two lines from a function = 0 marks
each correct line = 1 mark
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3
Question
2(b)
2(a)
chloride
oxide
sulfide
chlorine
oxygen
sulfur
Page 3 of 11
three correct = 2 marks
one correct = 0 marks
2
October 2018
Further Information
A4 is 0.8 A.
Marks
two correct = 1 mark
Answer
1
2
Further Information
A3 is 0.4 A.
A2 is 0.4 A.
water
type of
compound
nonmetal
Answer
Question
Marks
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5(b)
5(a)
Question
4
Question
1113/02
same or similar to the one in January
stars not in the same position
Page 4 of 11
1
Accept stars have moved / position of stars /
constellations have moved / arrangement of stars is
different
different brightness of stars
1
Further Information
Accept permeable skin / idea of absorbing oxygen
through the skin / lays eggs in water / lays unshelled
eggs
Accept reference to young being tadpoles sufficient
for larval stage
2 Note second marking point is dependent on correct
identification of amphibian(n)
Further Information
Accept the biggest star has moved
Marks
Marks
October 2018
different size stars
any one from
Answer
valid reason e.g. larval stage / smooth skin / moist skin
frog = amphibia(n)
Answer
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more particles
7(c)
more collisions
1
any volume greater than 22 (cm3)
7(b)
2
1
40 (cm3)
Answer
7(a)
Question
October 2018
Accept less space between particles / more
particles in one unit volume / more crowded particles
/ more particles in the same space / particles closer
together / more particles (to) collide / particles more
concentrated / more frequent collisions / collisions
more often / more chance of collisions = 2 marks
Further Information
Accept same size
3 Accept grew very well / tall(er)
gas C = (idea of) no change / not grown
gas A = grown / increased in size
6(b)
1
Accept wilting
oxygen
6(a)(ii)
1
Further Information
gas B = small(er) / dying
photosynthesis
6(a)(i)
Answer
Question
Marks
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8
loud speaker
letter R touching area where dots are far apart
Page 6 of 11
letter C touching area where dots are close together
air particles
2
Answer
Question
Marks
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carbon dioxide
any two from
9(c)
9(d)
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oxygen
9(b)
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Page 7 of 11
so gaseous exchange is less efficient / diffusion (of oxygen) is
slower
lower concentration gradient (for gaseous exchange)
so less oxygen (taken in with each breath idea)
air is less dense / few(er) particles / particles further apart
(aerobic) respiration
9(a)
2
1
1
1
Answer
Question
Marks
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Do not accept breathing
Accept anaerobic respiration
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11(b)
11(a)
Question
10(c)
magnesium + hydrochloric (acid)
10(b)
dispersion
(violet)
indigo
(blue)
green
(yellow)
orange
(red)
Answer
Page 8 of 11
stop chemicals getting into eye / avoid injuries to eye from
corrosive chemicals / stop reaction (mixture) getting into the
eyes
magnesium chloride + hydrogen
calcium
magnesium
zinc
iron
10(a)
Marks
all correct = 1 mark
Further Information
October 2018
note these are the only colours allowed
one or two correct and in correct order = 1 mark
2 three correct and in correct order = 2 marks
Further Information
There must be a reference to the eye and a
substance, chemical or reaction
1 Ignore refraction
1
magnesium chloride as a product = 1 mark
hydrogen as a product = 1 mark
3 both reactants in any order = 1 mark
1
Answer
Question
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12(c)
12(b)
12(a)
nitric (acid)
Elements in mixtures are joined by
chemical bonds.
Mixtures only contain elements.
Mixtures can be separated by physical
means.

Page 9 of 11
note if substance is written in both columns then
that substance is incorrect
sulfur
1
more than one tick  = 0 marks
one correct = 0
copper
water
1
two or three correct = 1 mark
(carbon)
magnesium carbonate
Mixtures are pure substances.
all correct = 2 marks
element
Further Information
October 2018
compound
2
Answer
Question
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
low
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Page 10 of 11
(blood is at high) pressure / so it does not rupture
high
14(b)(ii)
low
concentration
of oxygen
artery

high
concentration
of carbon dioxide
Answer
This makes the liquid become cooler.
This is called evaporation.
1
1
1
October 2018
Accept so blood vessel will not burst / resists the
pressure of the blood
any incorrect tick = 0 marks
both ticks required
Further Information
Accept denser / decrease in volume / gas / (water)
vapour
Ignore freely
Accept vigorous
These molecules move fast / quick / rapid enough to escape
the surface of the liquid.
4 each correct answer = 1 mark
Further Information
Accept heat energy / speed
Marks
Marks
Some of the molecules have more energy.
All the water molecules in the liquid are moving.
Answer
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14(a)
Question
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Question
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D
E
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16
Question
Answer
Answer
F1 x d1 = F2 x d2
but for 2 marks
Page 11 of 11
balance when moments are equal / balance when clockwise
moment equals anti-clockwise moment
force x distance is a moment
increasing / going up
C
15(b)
B
A
15(a)
Question
Marks
Marks
2
1
1
answer must refer to moments rather than force or
pressure
Accept F1 x d1 or F2 x d2
Further Information
Accept accelerating / (goes) faster / slow then goes
fast
more than one answer = 0 marks
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Cambridge International Examinations
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SCIENCE
1113/01
Paper 1
April 2017
MARK SCHEME
Maximum Mark: 50
IMPORTANT NOTICE
Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team
Leader.
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at a Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for
Teachers.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 10 printed pages.
IB17 05_1113_01/4RP
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Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Question
Answer
Marks
plant
cell
animal
cell
nucleus
()
()
cell wall

cytoplasm


cell
membrane


vacuole

structure
© UCLES 2017
Further Information
2 all four rows correct = 2 marks
1(a)
1(b)
April 2017
two or three rows correct = 1 mark
one row correct = 0 marks
name
letter
function
cell wall
A
where photosynthesis
happens
4 name and letter linkage
three correct links = 2 marks
one or two correct = 1 mark
chloroplast
B
where chemical
reactions occur
letter and function linkage
three correct links = 2 marks
cytoplasm
C
contains genetic
information
one or two correct = 1 mark
nucleus
D
rigid to support
the cell
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Answer
Marks
Earth’s
structure
description
core
centre of the Earth
crust
part made of liquid
mantle
outer part
one or two correct = 1 mark
2 each answer = 1 mark
igneous
either order
metamorphic
1 if more than one tick = 0 marks
2(c)
crystal
fossil

mineral
rock
© UCLES 2017
Further Information
2 all three correct = 2 marks
2(a)
2(b)
April 2017
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Question
Answer
Marks
April 2017
Further Information
3 six correct = 3 marks
3
four or five correct = 2 marks
two or three correct = 1 mark
light
.................................................
thermal
.................................................
thermal
Accept heat for thermal
.................................................
Ignore kinetic with reference to the hand bell
sound
.................................................
sound
.................................................
Question
kinetic
.................................................
Answer
Marks
Further Information
4(a)
parallel
1
4(b)(i)
ammeter
1
4(b)(ii)
current / amps
1 Accept rate of flow of charge
4(c)
7.5 (amps)
1 Accept any number in the range 7.2 – 7.8
Ignore incorrect units
4(d)
7.5 (amps) / same as A1
1 Accept same as answer in (c)
Ignore incorrect units
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Question
5(a)
Answer
Marks
April 2017
Further Information
4 each answer = 1 mark
A = lungs
B = liver
Accept duodenum
C = small intestine / ileum
D = kidney
2 Accept correct names
small intestine for C
lungs for A
5(b)
© UCLES 2017
how the blood
changes as it
passes through
the organ
letter
The concentration
of nutrients
increases.
C
The concentration
of carbon dioxide
decreases and
the concentration
of oxygen
increases.
A
if name and letter given, mark only letter
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Question
6(a)(i)
Answer
reactants
April 2017
Marks
products
water + carbon dioxide  glucose + oxygen
Further Information
2 reactants = 1 mark
products = 1 mark
Accept carbohydrate / sugar instead of glucose.
Ignore starch
Accept correct formulae or mix of words and
formulae but names take precedence
H2O + CO2  C6H12O6 + O2
6(a)(ii)
3 cm3
1 answer must include unit
6(b)(i)
more carbon dioxide available (for plant) / breath
contains carbon dioxide
1 Accept CO2
6(b)(ii)
move the lamp closer / more lamps / brighter bulbs
2 Accept increase temperature = 1 mark
Accept because enzymes work faster / more
collisions / particles move faster = 1 mark
because this
provide more light / increases light intensity
Ignore use more pond weed
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Question
Answer
Marks
April 2017
Further Information
7(a)
(type of salt) solution / (different metal salt) solutions
1 Ignore different metals
7(b)
volume / amount of solution / size of nail / time nail left in
/ temperature / concentration of solution
1 Accept type of nail / amount of iron
7(c)
sodium is more reactive than iron / sodium is higher up
in the reactivity series
1 Accept reverse argument
Question
Answer
8
normal
angle of incidence
Marks
Further Information
3 six correct = 3 marks
angle of reflection
four or five correct = 2 marks
two or three correct = 1 mark
incident
ray
reflected ray
mirror
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Question
9(a)
9(b)
9(c)
Answer
Marks
solid
April 2017
Further Information
1
gas
spread
far apart
liquid
closely packed
in a regular
pattern
solid
closely packed
but not in
a pattern
1 all correct = 1 mark
2 Accept evaporation / water changes to a gas /
water changes to water vapour
any two from
particles gain energy / (some) particles have more
kinetic energy / (some) particles move faster
Do not accept water boils
particles have overcome attraction between them / (idea
that) forces between particles have been broken
Accept particles diffuse into the air
particles have spread further apart (in the gas phase)
Accept (water) molecules instead of particles
at least one mark should be associated with
particles
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Question
10(a)
Answer
April 2017
Mark
K
Further Information
1 Accept potassium
Accept Fr
10(b)
H
1 Accept hydrogen
10(c)
Cl
1 Accept chlorine
10(d)
aluminium
1 Ignore Al
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Question
11(a)
Answer
Marks
April 2017
Further Information
2
any two from
eye protection / safety glasses
use small(er) masses / use light(er) masses
Accept weight rather than mass
stand away from the table / stand away from the masses
/ do the experiment on the floor / wear sturdy shoes
attach the masses to the wooden block
make sure the forcemeter is firmly attached
11(b)
11(c)
material
(forcemeter
reading
in N)
A
2.4
B
1.7
C
3.2
D
0.7
2 all figures in the table = 1 mark
correct heading for first column = 1 mark
materials can be in any order but the numbers
must be correct for each material
repeat the measurements / take more measurements
1 Accept (double) check the result
Accept use a wider range of masses / use
different masses
Do not accept use more accurate devices
Ignore get more accurate data
Ignore use more / different materials
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SCIENCE
1113/02
Paper 2
April 2017
MARK SCHEME
Maximum Mark: 50
IMPORTANT NOTICE
Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team
Leader.
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at a Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for
Teachers.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 12 printed pages.
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Question
1
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
Answer
Marks
An iron nail is attracted to both the south pole and
the north pole of a magnet.
Question
Answer
Further Information
1 Accept other indications of the correct answer
e.g. ticking or circling but answer line takes
precedence
Marks
Further Information
1 more than one answer ticked = 0 marks
2
A high pitched sound is always loud.
A high pitched sound always has a high
frequency.
A high pitched sound always has a large
amplitude.
A high pitched sound always has a low
frequency.
A high pitched sound must have a large
wavelength.
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Question
3(a)
Answer
arthropods
Marks
named group
April 2017
Further Information
3 if more than one line from any animal = 0 marks
each correct link = 1 mark
arachnid
3 pairs of legs
crustacean
5 pairs of legs
insect
myriapod
4 pairs of legs
3(b)
2
any two from
Ignore have a shell
all have an exoskeleton
do not have a backbone / are invertebrates
all have segmented bodies / bodies in sections
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Accept bilateral symmetry
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Question
4(a)(i)
Answer
Marks
April 2017
Further Information
1 Accept aluminium and chlorine
Al and Cl2
Ignore the chemical symbol Cl
4(a)(ii)
CO2 and MgCO3
1 Accept carbon dioxide and magnesium
carbonate
4(a)(iii)
KNO3 and MgCO3
1 Accept potassium nitrate and magnesium
carbonate
4(a)(iv)
KNO3
1 Accept potassium nitrate
4(b)
calcium oxide
1
Question
Answer
Marks
5(a)
120 J of thermal energy
1
5(b)
100 J of electrical energy
1
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Question
6(a)
Answer
Marks
April 2017
Further Information
1 Accept other indications of the correct answer
e.g. underlining and ticking but circling takes
precedence
biomass
more than one answer circled = 0 marks
6(b)(i)
3 Ignore acid rain
any three from
Do not accept ozone depletion and the
consequences of ozone depletion e.g. skin
cancer.
global warming
(enhanced) greenhouse effect
if ozone depletion mentioned and two others
correct max = 2 marks
climate change
floods /drought
crop failure / famine
‘pollution’ unqualified = 0 marks
desertification
Ignore carbon dioxide is poisonous
sea level rise
Ignore animals killed / habitats destroyed unless
qualified e.g. coral reef destruction
melting ice caps
6(b)(ii)
1 the mark is for the explanation
wood (no mark)
can be grown again / (idea of) recycles carbon / no
increase in atmospheric CO2 levels / (idea that) it is
renewable
or
hydrogen (no mark)
burns to form water / does not produce CO2 / renewable
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Question
Answer
Marks
April 2017
Further Information
1 The sentences must be comparative
7(a)
Accept gets bigger / gets larger instead of
increase
As the atomic mass increases the melting point
increases.
Accept atomic mass gets heavier for increase
or
As the atomic mass decreases the melting point
decreases.
Accept gets smaller instead of decrease
Accept atomic mass gets lighter for decrease
7(b)
gas
1
7(c)
–34 (C)
1 Accept other indications of correct answer e.g.
circling or underlining but answer line takes
precedence
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Question
Answer
8
April 2017
Marks
Further Information
2 all three correct = 2 marks
yellow
green
red
one or two correct = 1 mark
white
cyan
magenta
blue
Question
9
©UCLES 2017
Answer
Marks
the Sun
1 Accept star
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Question
Answer
Marks
April 2017
Further Information
10(a)(i)
type (amount of) fertiliser used
1 Accept treatment
10(a)(ii)
any two from
2
Ignore number of peppers
number of seeds / number of plants
Accept volume of fertilizer / amount of treatment
/ volume of treatment / concentration of fertiliser
amount of fertiliser
time
temperature
lighting / sunlight
the soil
Accept kept in the same greenhouse
Accept variety of peppers
Accept have plants same distance apart
Ignore amount of water
10(a)(iii)
as a control / as a comparison
1 Accept to see the effect of fertiliser
10(b)(i)
(idea that) fertiliser makes them grow taller (artificial
fertiliser is best)
1 answer must be comparative
10(b)(ii)
(idea that fertilizer) increases (number of peppers)
1 answer must be comparative
Accept doubles / trebles yield / more peppers
with fertilizer
Accept most with artificial fertiliser / least with
water
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Question
11
Answer
metal
sodium
©UCLES 2017
water
violent
reaction to
form
hydrogen
(1)
calcium
bubbles and
gives
hydrogen
iron
no reaction
Marks
April 2017
Further Information
5
acid
violent
reaction to
form
hydrogen
Accept lots of bubbles and forms hydrogen /
flames and forms hydrogen / quick reaction and
forms hydrogen
rapid
bubbles to
form
hydrogen
(1)
a slow
formation of
hydrogen
bubbles (1)
copper
no reaction
(1)
no reaction
gold
no reaction
no reaction
(1)
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Accept violent reaction to form hydrogen / lots
of bubbles and forms hydrogen / quick reaction
and forms hydrogen
Accept reaction to form hydrogen
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Question
12
Answer
April 2017
Marks
(book) B (no mark)
Further Information
1
Accept smaller area gives a larger pressure
(idea of) small(est) area (in contact with table)
Accept ora if A specified
Question
13
Answer
Marks
Further Information
3 Accept force for weight
any three from
Mike’s moment and Oliver’s moment are equal (must be
stated)
(idea that) Mike is half the weight of Oliver / Oliver is twice
the weight of Mike
Do not award this marking point if mass is used
instead of weight
(idea that) Mike is twice as far from the pivot than Oliver /
Oliver is half the distance from the pivot compared to Mike
Mike’s moment is 500 × 2 or 1000 (Nm)
Ignore units
Oliver’s moment is 1000 × 1 or 1000 (Nm)
Do not accept force is 1000
Accept
500 × 2 = 1000 × 1 for all three marks
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Question
14(a)
Answer
Marks
decrease
April 2017
Further Information
1 Accept it will get colder
Accept quoted temperature values less than
20 oC
14(b)
2 if both name and formulae are given both must
be correct
carbon dioxide / CO2
water / H2O
Question
15(a)
if both products are correct but reversed = 1
mark
Answer
Marks
Further Information
1 Accept other indications of correct answer but
circle takes precedence
air particles
heat particles
more than one answer circled = 0 marks
light particles
solid particles
sound particles
15(b)
Area A is called a compression because the particles are
close together.
Area B is called a rarefaction because the particles are
far apart.
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2 Accept any (idea that) the particles are close
Ignore particles are compressed together
Accept any (idea that) the particles are apart
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Answer
April 2017
Marks
Further Information
1 more than one tick = 0 marks
16
The particles have less energy.
The particles move closer together.

The particles move slower.
The particles spread out.
Question
17(a)

Answer
Marks
Further Information
1 both correct = 1 mark
Planet A Mercury
Planet B Venus
17(b)
F
17(c)
3
1 Ignore name
4
5
6
1 Accept other indications of correct answer but
circle takes precedence
7
more than one answer circled = 0 marks
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1113/01
SCIENCE
Paper 1
October 2017
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 9 printed pages and 1 blank page.
IB17 10_1113_01/2RP
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PUBLISHED
October 2017
© UCLES 2017
Page 2 of 12
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
note provides extra information when necessary
Annotations and abbreviations
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1(b)
1(a)
Question
1113/01


()





()



cell
membrane
cell wall
chloroplast
cytoplasm
nucleus
vacuole
Page 3 of 12
to make food / to make glucose / to make sugar / to
make starch / to make oxygen
for photosynthesis
absorb light (energy)
any two from
found in
animal
cells
found in
plant cells
structure
Answer
Marks
Further Information
2
assume a blank cell = 
2 each correct column = 1 mark
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rusts slowly / does not rust
2(d)
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2(e)
ductile
2(c)
lets light through
magnetic
sonorous
sonorous
ductile
2(b)
magnetic
bumper / fender and tyres
Answer
Page 4 of 12
strong
strong
Marks
Further Information
October 2017
1 Accept you can see through it
Accept stronger / harder
Accept corrode / corrosion instead of rusting
1 ora e.g. iron rusts
1 more than one answer circled = 0 marks
1 more than one answer circled = 0 marks
Accept polymers and rubber or air
1 both answers needed
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1
(direction of) the transfer of energy / energy flow
4(c)
© UCLES 2017
1 more than one letter = 0 marks
B
1 more than one letter = 0 marks
Further Information
4 each correct sentence = 1 mark
Further Information
4(b)
Marks
Marks
D
Answer
The green filter only transmits green light.
The yellow paper reflects the red light and green light.
This light contains red light, green light and blue light.
makes white light.
When these three primary colours are added together it
Answer
Checkpoint Secondary 1 Science – Mark Scheme
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4(a)
Question
3
Question
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5(e)
5(d)
zinc chloride / ZnCl2
hydrogen / H2
(least reactive)
Page 6 of 12
1 Do not accept zinc chlorine
1 Ignore H
1 all correct for 1 mark
(most reactive)
5(c)
zinc / Zn
iron / Fe
tin / Sn
copper / Cu
1
14
5(b)
Further Information
1
Marks
number of bubbles / amount of bubbles
Answer
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1 Do not accept n
N
7(c)
© UCLES 2017
1 Accept 15
5
7(b)
Further Information
1
Marks
7
Answer
7(a)
Question
2 Accept molecules, particles or ions instead of
atoms
atoms vibrate
6(c)
energy is passed or transferred from one atom to another
atom
1 Accept heat travels faster through some metals
(idea that) some metals are better conductors than
others / metals have different conductivities
6(b)
Further Information
1
Marks
October 2017
conduction
Answer
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8(c)(ii)
Page 8 of 12
magnesium must be needed to make chlorophyll /
without magnesium the plant cannot make chlorophyll
you only get fruit and root growth when phosphates
present in A or B / not good growth when phosphate not
present in C = 1 mark
1 Accept chlorophyll contains magnesium
the third marking point depends on the first
and/or the second marking points
3
root (growth) = 1 mark
8(c)(i)
fruit (growth) = 1 mark
October 2017
1 more than one answer circled = 0 marks
Further Information
1 Accept oxygen
Marks
water
Answer
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8(b)
8(a)
Question
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D
fossils
9(b)(ii)
9(c)
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igneous
pH (scale)
C
9(b)(i)
9(d)
160
9(a)
Question
1113/01
peat
rocky
Answer
Page 9 of 12
Marks
Further Information
October 2017
1
1 more than one answer circled = 0 marks
1 Accept ecf from (a)
1 Accept ecf from (a)
1
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2
measure height, width and depth
10(b)(ii)
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add cube and measure volume of water displaced
put known volume of water in measuring cylinder
or
measure volume of water displaced
use a Eureka can and water
or
multiply them together
1
volume
10(b)(i)
Further Information
1 Do not accept weighing scales
Marks
uses a (triple-beam, top-pan or electric) balance /
scale(s)
Answer
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10 (a)
Question
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12
Question
11(b)
11(a)
Question
1113/01
4. V / volt
3. A / amp / ampere
2. voltmeter
1. ammeter
to breed
Answer
Page 11 of 12
young kept warm / sheltered from cold / sheltered from
heat / sheltered from the wind / sheltered from the rain
can rear young safely out of sight
any two of
large ears / sensitive ears
large eyes / eyes at side of head / has all round vision
any one of
Answer
Marks
Marks
Further Information
Further Information
4 each answer = 1 mark
2
1
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PUBLISHED
October 2017
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Cambridge Secondary 1 Checkpoint
1113/02
SCIENCE
Paper 2
October 2017
MARK SCHEME
Maximum Mark: 50
Published
This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the
examination. It shows the basis on which Markers were instructed to award marks. It does not indicate the
details of the discussions that took place at an Markers’ meeting before marking began, which would have
considered the acceptability of alternative answers.
Mark schemes should be read in conjunction with the question paper and the End of Series Report.
Cambridge will not enter into discussions about these mark schemes.
This document consists of 11 printed pages and 1 blank page.
IB17 10_1113_02/2RP
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PUBLISHED
October 2017
©UCLES 2017
Page 2 of 13
/ OR alternate responses for the same marking point
( ) the words or units in brackets do not need to not need to be stated
Accept an acceptable response
Do not accept indicates an incorrect response that would contradict another otherwise correct alternative
Ignore indicates an irrelevant answer that is not creditworthy, however, full marks can still be achieved even with the answers that are ignored
ecf error carried forward, marks are awarded if an incorrect response has been carried forward from earlier working, provided the subsequent
working is correct
ora or reverse argument
note provides extra information when necessary
Annotations and abbreviations
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1(c)
Page 3 of 13
heart disease / obesity / high blood pressure
any one from
vitamins
1(b)
1 Accept diabetes / stroke / high cholesterol /
plaque in blood vessels
1 Ignore letter of vitamin
Accept ecf if protein given
1 Accept to prevent constipation if fibre given in
(a)(i)
for energy
1(a)(ii)
Further Information
1 Accept fibre / starch
Marks
October 2017
carbohydrates
Answer
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2(a)
Question
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idea that particles are spreading out / move further apart
= 2 marks
but
idea that particles are moving = 1 mark
When a solid changes into a liquid it is said to melt.
When a liquid evaporates the particles separate.
solids cannot be squashed.
The particles in solids are close together which means
Answer
Marks
2
3
Further Information
October 2017
Accept particles move anywhere = 2 marks
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Accept number of compete waves stays the
same
frequency remains the same / pitch remains the same
Page 5 of 13
Accept (because) volume (of sound) decreases
/ loudness decreases
(because) less sound (reaches the microphone) / the
sound is quieter
wavelength remains the same
Accept amplitude is lower
October 2017
amplitude of wave decreases
height of wave decreases
any two from
3(b)
2
1 Accept nothing happens
stays the same
3(a)(ii)
Further Information
1
Marks
6 (complete) waves
Answer
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5(b)
5(a)(ii)
5(a)(i)
Question
fish
reptiles
fossilization
Page 6 of 13
respiration
fertilization
neutralisation
evaporation
the idea of many colour changes available / will give you
a pH value
colour goes red / pink
Answer
mammals
Answer
Marks
Marks
Further Information
October 2017
1 more than one answer circled = 0 marks
1 Accept can tell how acidic the soil is
1
Further Information
2 features must be exclusive to mammals
1
Checkpoint Secondary 1 Science – Mark Scheme
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presence of external ears
presence of hair / fur
4(b)
bird
amphibians
4(a)
Question
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7(b)
7(a)
Question
6(b)
6(a)
Question
1113/02
Page 7 of 13
The further the lamp is from the water plant the slower it
photosynthesises.
or
The further the lamp is from the water plant the fewer the
bubbles of gas produced.
time
the distance of the lamp from the water plant
the number of bubbles / the volume of oxygen or gas
any two from
Answer
a different pattern
same as the pattern in December
same as the pattern in June
(idea that) the Earth has moved
Answer
Marks
Marks
Further Information
October 2017
1 Accept ora e.g. The closer the lamp is to the
water plant the more bubbles of gas were
produced.
2
Further Information
1 more than one answer circled = 0 marks
1
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9
Question
8(c)
8(b)
8(a)
Question
1113/02
10 (N / cm2)
4000
400
zinc nitrate
lead
iron
lead
magnesium
zinc
(B)
C
A
Answer
D
Answer
Page 8 of 13
Marks
Marks
Further Information
2
either order
Further Information
2 each correct answer = 1 mark
iron and lead = 1 mark
2 magnesium and zinc = 1 mark
1
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Page 9 of 13
Saturn is closer to the Sun so should have less time to
orbit the Sun (compared to Uranus)
11(b)
©UCLES 2017
Jupiter and Mars
Answer
increase the depth of the liquid / idea of changing the
temperature
most friction would have the longest time
corn syrup has the most friction
honey is not the longest time / corn syrup has the longest
time
any two from
Answer
Marks
Marks
Further Information
October 2017
1 Accept ora
either order
1 both required
Further Information
Accept increase amount of liquid / use a taller
container
1 Accept changes to liquids e.g. use thicker
liquids
note just quoting the times is not sufficient a
comparison must be made
note if yes = 0 marks for the question
2 no mark for yes or no
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
11(a)
Question
10(b)
10(a)
Question
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©UCLES 2017
13
Question
12
Question
1113/02
Answer
carries oxygen
around the body
fertilises the egg cell
transmits nerve
impulses around
the body
asorbs water and
mineral ions from
the soil
function
Page 10 of 13
different types of atoms are not joined / different
elements are not bonded / different substances not
bonded together
A and C
cell
Answer
Marks
Marks
Further Information
October 2017
marking point 3 is dependent on all letters being
correct
3 each correct letter = 1 mark
Further Information
one correct = 0 marks
two correct = 1 mark
2 all three correct = 2 marks
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Page 11 of 13
streamlined shape / large wings / big wings / powerful
wings
15(b)
©UCLES 2017
fan-tailed has an extra set of tail feathers
15(a)
1 Accept aerodynamic shape
Accept has a fan-tail
1 note assume unqualified answers refer to the
fan-tailed dove
Further Information
1 Accept friction / drag
air resistance
note arrow can be any length
14(c)
Question
October 2017
1 note arrow must be vertically downwards
Further Information
1
Marks
Marks
friction
Answer
Answer
Checkpoint Secondary 1 Science – Mark Scheme
PUBLISHED
14(b)
14(a)
Question
1113/02
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©UCLES 2017
soil C is alkaline / soil C has a higher pH
17(b)
Answer
bacteria / fungi
A5 = 1.8 amps
A4 = 0.4 amps
Answer
Page 12 of 13
1
1
Marks
Marks
2
Further Information
Further Information
October 2017
Accept ora
note assume unqualified answers refer to soil C
Accept named bacteria or fungi
Checkpoint Secondary 1 Science – Mark Scheme
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17(a)
Question
16
Question
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Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
SCIENCE
1113/01
Paper 1
April 2016
MARK SCHEME
Maximum Mark: 50
IMPORTANT NOTICE
Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team
Leader.
This document consists of 8 printed pages.
IB16 05_1113_01/7RP
© UCLES 2016
[Turn over
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2
Question number
1
Part
CF
Skill
Mark
(a)
7Be2
A
2
CSS00504
Answer
Further Information
cabbages (plants)
slugs
mark each pair of
boxes independently
(toad)
two pairs correct = 2
marks
snakes
rooks
one pair correct = 1
mark
(b)
7Be2
A
1
5
(c)
9Be4
K
2
example e.g. bacteria / fungi /
microorganisms / microbes
why
decays organic or waste matter /
rots organic or waste matter /
breaks down organic matter / breaks
down waste (matter) /
makes compost /
provides minerals / provides (plant)
nutrients
Total
5
Question number
2
Part
CSS00270_A
CF
Skill
Mark
Answer
(i)
7Ce1
A
1
igneous
(ii)
7Ce1
A
1
magma cooled slowly / took longer for Accept reverse
the magma to cool
argument if specified
(b)
7Ce1
A
1
E
(c)
7Ce3
K
1
fossils
(a)
Total
© UCLES 2016
Further Information
more than one answer
= 0 mark
4
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Question number
3
CSS00411
Part
CF
Skill
Mark
(a)
7Pb2
K
1
orbit
(b)
7Pb1
K
1
24 (hours)
(c)
7Pb4
K
1
The Sun is a source of light.
(d)
7Pb4
K
1
A planet is seen because light is
reflected by its surface.
Total
4
Question number
4
Answer
Further Information
CSS00313
Part
CF
Skill
Mark
Answer
Further Information
(a)
8Bh12
K
1
growth of body hair / pubic hair
(b)
(i)
8Bh13
K
1
ovary
Accept ovaries
(b)
(ii)
8Bh13
K
1
produce eggs / release eggs
Do not accept ovule
(c)
(i)
8Bh13
K
1
prepare for implantation
The answer must refer
to a fertilised egg,
foetus, zygote or
embryo
(c)
(ii)
8Bh13
K
1
released as a period / menstruation /
released as blood / passes out through
the vagina
Total
© UCLES 2016
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Question number
5
Part
CF
Skill
Mark
(a)
7Ep2
8Pm3
E
1
CSS00445
Answer
Further Information
Increasing the number of turns of wire
around the iron rod will make the
electromagnet stronger / the
electromagnet pick up more
objects.
(b)
(c)
7Ep2
8Pm3
8Ec4
8Pm3
E
1
use of two pieces of data to illustrate
that she is correct / more turns picks
up more paper clips
E
1
Total
3
Question number
6
Part
CF
Skill
Mark
(a)
9Ec2
9Cc1
E
2
(b)
9Cc5
yes (no marks)
A
3
CSS00383
Answer
Further Information
change in
temperature
in °C
endothermic or
exothermic
reaction
(–4)
endothermic
(+4)
exothermic
–5
endothermic
sodium chloride
carbon dioxide
© UCLES 2016
Answer must
specifically refer to
turns and number of
paper clips
(idea of) using a wider range of the
number of turns / use 1, 3, 5, turns /
use the same size paper clips / repeat
each one / get an average value / use
smaller paper clips
water
Total
If no then = 0 marks for
question
5
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left hand column = 1
mark, minus sign (–)
must be present
right hand column = 1
mark.
one mark for each
correct answer
answers can be in any
order
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5
Question number
Part
7
CF
Skill
Mark
CSS00498
Answer
Further Information
(a)
(i)
8Ec1
7Bc1
E
1
1.24 seconds
(a)
(ii)
8Ec1
7Bc1
E
1
0.31 seconds
(a)
(iii)
9Ec4
7Bc1
E
1
no because Oliver takes longer
or
NOTE the mark is for
the explanation.
BUT No marks for Yes
not sure because their times are very
similar
(b)
(b)
(i)
(ii)
Total
© UCLES 2016
8Ec4
7Bc1
E
9Eo1
7Bc1
E
2
anomalous = not fitting the pattern
4th trial / 0.42 seconds
1
one mark for each
correct point
do more repeats / more trials
6
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Question number
Part
8
CSS00379
CF
Skill
Mark
(i)
9Cp1
A
1
4
(ii)
9Cp1
A
1
5
(b)
8Cp2
K
1
Be
(c)
9Cp2
A
2
Any two from
(a)
Answer
Further Information
Do not accept
BE or be
different number of protons / less
protons / fewer protons / has 3 protons
/ lower atomic number / atomic number
is 3
smaller number of particles in nucleus
/ smaller mass number / smaller
nucleon number / 7 particles in
nucleus / mass or nucleon number is 7
different number of electrons / less
electrons / fewer electrons / 3
electrons / lithium is 2,1 / different
electronic structure
(d)
Total
© UCLES 2016
9Cp1
K
1
Darwin Galileo Newton Rutherford two answers = 0 marks
6
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Question number
9
Part
CF
Skill
Mark
(a)
8Pl3
A
1
(b)
8Pl3
K
1
CSS00427
Answer
Further Information
C
i is always larger than r
more than one answer
circled = 0 marks
i is always the same as r
r is always larger than i
r is sometimes larger than i
Total
2
Question number
10
Part
CF
Skill
Mark
9Pf1
A
3
CSS00178_A
Answer
Further Information
force/area or 10/2
correct numerical
answer with incorrect
units = 2 marks
5
N/cm2 or N per cm2
Total
© UCLES 2016
3
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Question number
11
Part
CF
Skill
Mark
(a)
7Bv3
A
2
CSS00350
Answer
Further Information
Any two from
must be visible features
6 legs
3 body sections / has head, thorax and
abdomen
wings
(1 pair of) antennae
(b)
(i)
9Bv4
K
1
(ii)
9Bv4
K
2
Total
5
Question number
12
(Charles) Darwin
C
D
(A)
B
CF
Skill
Mark
(a)
8Ps1
K
1
The loud speaker vibrates.
(b)
8Ps1
K
1
When air particles are close together it
is called a compression.
© UCLES 2016
B = 1 mark
CSS00423
Part
Total
C and D = 1 mark
Answer
Further Information
2
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Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
SCIENCE
1113/02
Paper 2
April 2016
MARK SCHEME
Maximum Mark: 50
IMPORTANT NOTICE
Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team
Leader.
This document consists of 8 printed pages.
IB16 05_1113_02/6RP
© UCLES 2016
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2
Question number
Part
1
CSS00431
CF
Skill
Mark
Answer
8Pl6
A
2
A red
Further Information
B no light
Total
2
Question number
2
Part
(a)
S_009_051_A
CF
Skill
Mark
Answer
Further Information
(i)
9Bp3
A
1
nectar / bright petals / coloured petals
/ large petals / scent / pollen
(ii)
9Bp3
K
2
pollen from anther
gets onto stigma
(b)
(i)
9Bp3
K
1
Any one from
prevent overcrowding
less competition (for light, water or
nutrients)
(ii)
9Bp3
A
2
method = wind
reason = parachute / hairs / feathery
Total
© UCLES 2016
6
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if method is incorrect =
0 marks for the
question
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3
Question number
Part
(a)
3
CSS00361
CF
Skill
Mark
Answer
Further Information
(i)
8Ep6
8Cs1
E
1
go down / decrease
(ii)
8Cs1
K
2
move closer together
particles slow down / move slower /
particles have less energy
(b)
(i)
8Eo3
8Cs1
E
1
wear eye protection / gloves / don’t
hold the apparatus / put the apparatus
in a clamp / safety screen / laboratory
coat
(ii)
8Eo3
8Cs1
E
1
(eye protection) = to prevent (hot)
water going into eyes / to prevent
glass going in your eyes
(gloves / don’t hold the apparatus / put
the apparatus in a clamp / laboratory
coat ) = to prevent burning / prevent
hot water getting to the skin
Total
5
Question number
4
CSS00425
Part
CF
Skill
Mark
(a)
8Ps2
K
1
The pitch of sound is also called its
frequency.
(b)
8Ps2
A
1
tuna
Total
© UCLES 2016
a reason linked to the
safety precaution
related to the
experiment in the
question
Answer
Further Information
2
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4
Question number
5
CSS00163
Part
CF
Skill
Mark
Answer
Further Information
(a)
7Bc2
A
1
(idea of) water loss
(b)
7Bc2
A
2
Any two from
from fungi
in the air / by the wind
from other rotten fruit
direct contact (with other rotten fruit)
(c)
7Bc2
A
2
Any two from
(idea of) fridge is cold
(idea of) limited access (to the fruits) /
enclosed / spores unable to gain
access
no draughts
Total
© UCLES 2016
5
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5
Question number
6
Part
CF
Skill
Mark
(a)
7Cs1
K
2
CSS00453
Answer
Further Information
each correct tick =
1 mark
Liquids have no fixed
shape.

three ticks and two
correct = 1 mark
three ticks and one
correct = 0 marks
Liquids have no fixed
volume.
four or five ticks = 0
marks
Liquid particles only
vibrate.
The particles in a liquid
expand.
The particles in a liquid
move around.
(b)
(i)
7Eo1
7Cs1
E
1
103
(ii)
7Ec1
7Cs1
E
1
increases / goes up
Total
4
Question number
7

CSS00575
Part
CF
Skill
Mark
(a)
9Pe2
K
1
The main form of thermal (heat)
energy transfer in liquids and gases is
called convection.
(b)
9Pe2
K
1
Thermal (heat) energy is transferred
through a solid by conduction.
(c)
9Pe2
K
1
Iron is a metal so it is a good
conductor.
(d)
9Pe2
K
1
insulator
Total
© UCLES 2016
Answer
Further Information
4
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Question number
8
CSS00337
Part
CF
Skill
Mark
(a)
7Ec1
8Bh11
E
1
As the number of cigarettes smoked
each day during pregnancy increases,
the birth mass of a baby
decreases.
(b)
8Bh11
A
1
give up smoking / reduce the number
of cigarettes they smoke each day
Total
2
Question number
9
Part
CF
Skill
Mark
(a)
8Cp2
K
1
(b)
8Cp1
K
2
Answer
Further Information
CSS00277
Answer
Further Information
Na
Do not accept NA / na
/ na / NA
Sodium conducts electricity.

Sodium does not conduct heat.
three ticks and two
correct = 1 mark
Sodium has a low boiling point.
Sodium is ductile.

Sodium is not malleable.
(c)
(i)
9Cc2
K
1
hydrogen
(ii)
9Cp3
K
1
faster / greater / bigger / more / quicker
Total
© UCLES 2016
5
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each correct tick = 1
mark
three ticks and one
correct = 0 marks
four or five ticks = 0
marks
Combined By NESRINE
7
Question number
10
CSS00444
Part
CF
Skill
Mark
(a)
7Ep4
7Pf1
E
2
(i)
7Ep5
7Pf1
E
1
the force needed to move the wooden
block will be less (than with rougher
surfaces)
(ii)
7Ep5
7Pf1
E
1
(smoother surfaces have) less friction
(b)
4
Question number
11
(a)
(i)
(ii)
(b)
Further Information
force / newtons
mass
Total
Part
Answer
CF
Skill
Mark
9Cc2
K
1
9Cc2
K
1
9Cc4
A
2
CSS00372
Answer
Further Information
potassium / K
sodium / Na
calcium / Ca
all three in any order =
1 mark
case must be correct if
symbol written
hydrogen
aluminium and silver nitrate

each correct tick = 1
mark
calcium and zinc sulfate

three ticks and two
correct = 1 mark
copper and sodium chloride
lead and iron nitrate
three ticks and one
correct = 0 marks
four or five ticks = 0
marks
tin and magnesium chloride
Total
© UCLES 2016
4
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8
Question number
12
Part
CF
Skill
Mark
(a)
8Pm1
A
2
CSS00558
Answer
Further Information
they all repel each other
(idea that) the north poles are next to
north poles / south poles are next to
south poles / like poles are next to
each other
(b)
8Pm1
A
2
they all attract each other
(idea that) the north and south poles
are next to each other / unlike poles
are next to each other
Total
4
Question number
13
Part
CF
Skill
Mark
(a)
8Pf1
A
2
CSS00418
Answer
Further Information
10/4 or distance/time
2.5 (in metres per hour)
(b)
Total
© UCLES 2016
8Pf1
A
1
4 (hours)
3
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Cambridge Secondary 1 Checkpoint
1113/01
SCIENCE
Paper 1
October 2016
MARK SCHEME
Maximum Mark: 50
338/409
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Question number
1
Part
Mark
Answer
Further Information
4
each correct link = 1 mark
Ignore any links from muscle
if more than one link for an
organ = 0 marks for that organ
Total
4
Question number
2
Part
Mark
Answer
Further Information
(a)
1
gravel
Accept bottom layer
(b)
1
10 (cm3)
(c)
1
clay and
higher up (the measuring cylinder) /
above silt
must have both clay and
explanation for one mark
Accept larger particles nearer
the bottom
Accept clay (floats) on top (of
silt)
Accept reverse argument
(d)
2
Sandy soils have more sand
particles than clay soils.
Between the sand particles there are
large air spaces.
all correct = 2 marks
two correct = 1 mark
one correct = 0 marks
Accept other indication of
Sandy soils are less likely to become correct answer e.g. ticking but
waterlogged.
circle takes precedence
Total
5
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Question number
3
Part
Mark
(a)
Answer
Further Information
Accept other indications of
correct answer e.g. underlining
or ticking but circle takes
precedence
1
more than one letter circled = 0
marks
(b)
Accept other indications of
correct answer e.g. underlining
or ticking but circle takes
precedence
1
more than one letter circled = 0
marks
(c)
Accept other indications of
correct answer e.g. underlining
or ticking but circle takes
precedence
1
more than one letter circled = 0
marks
(d)
Accept other indications of
correct answer e.g. underlining
or ticking but circle takes
precedence
1
more than one letter circled = 0
marks
Total
4
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Question number
4
Part
Mark
(a)
2
Answer
Further Information
brown hair colour

three correct ticks = 2 marks
green eye colour

two correct ticks = 1 mark
her gender (female)

one correct tick = 0 marks
playing the piano
speaking French and
Italian
three correct ticks and one
incorrect = 1 mark
two incorrect ticks = 0 marks
Accept other indications of
correct answer but ticks take
precedence
(b)
(i)
1
nucleus
(ii)
2
any two from
Accept chromosomes / genes
/ DNA / RNA
Accept female gamete
egg / ovum
Do not accept ovule for egg
sperm
Accept male gamete
(idea of) fertilisation
Accept when gametes / sex
cells / reproductive cell = 1
mark
fuse / join together / form
zygote = 1 mark
Total
5
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Question number
5
Part
Mark
(a)
Answer
Further Information
(i)
1
F
Accept fluorine
(ii)
1
Li
Accept lithium
(iii)
1
Mg
Accept magnesium
(b)
2
two electrons on inner ring = 1
mark
four electrons on the outer ring
= 1 mark
Accept x or circles or e
Total
5
Question number
6
Part
Mark
Answer
Further Information
four correct = 2 marks
2
two or three correct = 1 mark
one correct = 0 marks
Total
2
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Question number
7
Part
Mark
(a)
1
Answer
Further Information
(body) mass / (body) temperature /
distance / time (taken) / speed /
recovery time / breathing rate
Accept (body) weight / BMI
Accept how fast she breathes /
how long she cycles / volume of
air she breathes / amount of
oxygen taken in
breathing is not sufficient
Ignore reference to calories /
reference to energy / pulse rate /
heart rate / body fat
(b)
3
table drawn with space for the power Accept power and heart rate
and heart rate data and correct (per minute)
headings
Do not accept heart beats
Accept watts / W
units shown in the headings only
Accept beats per min
/ bpm / heart rate per minute
all data entered correctly
Total
4
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Question number
8
Part
Mark
(a)
(i)
1
(ii)
1
Answer
Further Information
sulfuric (acid)
Accept H 2 SO 4
burning
condensation
Accept other ways of
indicating correct answer e.g.
ticking or underlining but circle
takes precedence
fermentation
neutralisation
more than one answer circled
= 0 marks
oxidation
(b)
2
D F C (E) B A
DFC in correct place = 1 mark
BA in correct place = 1 mark
(c)
1
Total
5
eye protection / tie (long) hair back /
(heat proof) gloves / (idea of) apron or
lab coat / standing up / use clamps or
equivalent to hold apparatus
344/409
Accept common names for
eye protection
Combined By NESRINE
Question number
9
Part
Mark
Answer
Further Information
(a)
1
9.8
(b)
1
2.8 (4th box in first row)
(c)
1
air resistance increases with area.
Accept ora
answer must be a trend or
pattern linking air resistance
and area e.g. increased area
= stronger air resistance
Total
3
Question number
10
Part
Mark
(a)
Answer
Further Information
all four lines correct =
3 marks
3
two or three lines correct = 2
marks
one line correct = 1 mark
two lines from a fruit = 0
marks for that fruit
(b)
1
Total
4
prevent overcrowding / reduce
competition / colonise new territory /
allow it to spread
345/409
Accept so plants can grow in
other places
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Question number
11
Part
Mark
1
Answer
Further Information
water and oxygen
both correct for the mark,
either order
Accept correct formulae H 2 O
and O 2
Do not accept air
Total
1
Question number
12
Part
Mark
Answer
Further Information
1
A (and) B
both required, either order
(a)
Accept Venus and Mercury
(b)
1
(A) Mercury
all correct = 1 mark
(D) Mars
(F) Saturn
(c)
1
The planet that takes the shortest time
to orbit the Sun is A.
more than one letter = 0 marks
Accept Mercury
Accept other ways of
indicating the answer e.g.
circling or ticking but the
answer in the sentence takes
precedence
Total
3
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Question number
13
Part
Mark
(a)
2
(b)
1
Total
3
Question number
14
Part
Mark
(a)
1
(b)
1
Answer
Further Information
yes
no
no
no
yes
five correct = 2 marks
The Moon can be seen from the Earth
because light from the Sun is
Accept reflecting / reflect
reflected.
Do not accept refracted
Answer
Further Information
non-renewable (energy)
Ignore unrenewable
three or four correct = 1 mark
one or two correct = 0 marks
both required = 1 mark
any incorrect answer = 0
marks
Total
2
347/409
Combined By NESRINE
Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
1113/02
SCIENCE
Paper 2
October 2016
MARK SCHEME
Maximum Mark: 50
348/409
Combined By NESRINE
Question number
1
Part
Mark
Answer
Further Information
(a)
1
four
(b)
1
they put the energy into the food chain.
Accept they make their own
food
Accept can photosynthesise
Ignore they are at the start of
the food chain
(c)
2
increase
Accept they will overpopulate
fewer of them are being eaten (by the
cod)
Accept fewer or none of their
predators left
Accept cod is a predator of
shrimp / shrimp is the prey of
cod
Total
4
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Question number
2
Part
Mark
(a)
1
(b)
3
(c)
2
Answer
Further Information
8
Accept any value between
7.9 and 8
each correct word = 1 mark
The water particles gain more kinetic
energy.
Do not accept heat
The particles move faster.
Accept (further) apart /
quicker / more rapidly / more
vigorously
This causes the particles to spread
out.
Accept evaporate
all particles touching or almost touching
particles in rows / particles in a set
pattern
There must be an attempt to
draw the spheres touching
the box does not need to be
full
Total
6
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Question number
3
Part
Mark
(a)
Answer
Further Information
five correct = 2 marks
2
two, three or four correct = 1
mark
one correct = 0 marks
(b)
1
blue green red
(c)
1
Total
4
white
yellow
X anywhere within the prism
351/409
more than one answer ringed
= 0 marks
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Question number
4
Part
Mark
(a)
2
Answer
Further Information
food
item
meat
main type
of nutrient
carbohydrate
bread
fat
lettuce
protein
butter
roughage
(fibre)
four correct links =
2 marks
two or three correct links = 1
mark
one correct link =
0 marks
Accept bread to roughage
(b)
Total
2
must have both ideas for 2
marks
provides all the nutrients
Accept provides the nutrients
in the food pyramid / provides
every type of nutrient
(idea of) in the correct proportions
Accept in the right amount /
in the appropriate amount /
adequate amount / in the
proper amounts / suitable
amounts
4
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Question number
5
Part
Mark
(a)
(i)
1
Answer
Further Information
more gas is collected when the
concentration is higher
Accept quoting data i.e. two
concentrations and two
volumes
Accept ora
(ii)
2
more particles per unit volume /
particles are closer together / particles
are more crowded
Accept more frequent
collisions = 2 marks
Ignore references to particles
moving faster / having more
energy
more collisions
Do not allow collides faster
(b)
1
Total
4
repeat them / increase the range of
concentration / do more concentrations
353/409
Accept measure the gas
volume for a longer time
period
Combined By NESRINE
Question number
6
Part
Mark
Answer
(a)
1
C
(b)
2
C
Further Information
either order
E
(c)
1
A, B and D
all three required
any order
Total
4
Question number
7
Part
Mark
(a)
2
Answer
Further Information
Any two from
percentage or number of smokers has
decreased
percentage or number of female
smokers has decreased
percentage or number of male smokers
has decreased.
Accept graphs show the
same pattern / line(s)
decrease / all the graphs
decrease = 1 mark
Accept the rate of decrease
gets smaller = 1 mark
males have decreased more than
females.
more male smokers than females
rate of decrease has slowed down for
both sexes.
(b)
1
Total
3
decline in number or % of smokers
(means less risk of lung cancers.)
354/409
Accept idea that the % of
heavy smokers is probably
falling
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Question number
8
Part
Mark
(a)
Answer
Further Information
2
aluminium and copper chloride

each correct tick =
1 mark
three ticks and two
correct = 1 mark
copper and potassium chloride
three ticks and one
correct = 0 marks
four or five ticks =
0 marks
gold and silver nitrate
lead and copper chloride

tin and zinc chloride
(b)
Total
(i)
1
hydrogen / H 2
(ii)
1
exothermic
Accept H
4
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Question number
9
Part
Mark
(a)
Answer
Further Information
all correct = 2 marks
2
two correct = 1 mark
one correct = 0 marks
Accept arrow anywhere on
individual magnets
(b)
(i)
1
Accept arrow anywhere on
the field line
(ii)
1
Do not accept contradictory
arrows
Do not accept lines that
cross each other
at least two correct line(s) and correct
arrow = 1 mark
Total
4
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Question number
10
Part
Mark
2
Answer
Further Information
Any two from
Accept answers wherever
they are written
(idea of) less food (production) / less
photosynthesis
answer must be a
comparison
Accept no photosynthesis /
no food (production)
less light / dimmer light / colder / less
CO 2 / less water
answer must be a
comparison
Mars is further away from the Sun (than
the Earth)
Total
2
Question number
11
Part
Mark
Answer
(a)
1
C
(b)
1
E
(c)
1
D
Total
3
Further Information
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Question number
12
Part
Mark
(a)
1
Answer
Further Information
clockwise moment equal to anticlockwise moment / both have the
same moment / both have same
turning force / both boys are the
same distance from the pivot and the
same weight / calculation of
400 × 3 = 400 × 3
Accept both boys are 3 m from
the pivot and have a weight of
400 N
Accept both have the same
length and force
Do not accept mass instead of
weight or force but ignore mass
if correct reference to moment or
turning force
(b)
1
the see saw tips (to the right) / does
not balance
Accept Mike will go down or
Ahmed will go up
Accept moves clockwise
(c)
1
Accept neither Mike nor Ahmed
will go up and down
balances
Accept stays the same / does
not move
(d)
1
Total
4
the see saw tips (to the left) / does
not balance
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Accept Ahmed will go down
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Question number
13
Part
Mark
Answer
(a)
1
reptile
(b)
1
arthropod
(c)
1
mammal
(e)
1
amphibian
Total
4
Further Information
359/409
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Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
1113/01
SCIENCE
Paper 1
For Examination from 2014
SPECIMEN MARK SCHEME
MAXIMUM MARK: 50
This document consists of 7 printed pages and 1 blank page.
IB14 1113_01_SM/4RP
© UCLES 2014
[Turn over
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2
Question
1
Part
Mark
Answer
Further Information
(a)
1
water plants / bamboo plant
Accept plant / bamboo
(b)
1
snail / panda
(c)
1
idea of eating both animals and plants
(d)
1
energy flow
Ignore what eats what
(e)
1
not enough food / shelter / habitat
Accept loss of homes /
loss of nests
Total
5
Question
2
Answer
Further Information
C / very high melting point
1 mark for each answer
E / good conductor of heat
Either order
Part
Mark
(a)
2
(b)
1
B / can be compressed
(c)
1
F / poor conductor of heat
(d)
1
H / non-conductor of electricity
Total
5
Question
3
Part
Mark
(a) (i)
1
The amplitude of whistle 1 is less than the
amplitude of whistle 2.
(ii)
1
The wavelength of whistle 1 is the same as the
wavelength of whistle 2.
(b)
2
Answer
Further Information
(Loudness) whistle 2 is louder (than whistle 3)
(Pitch) whistle 2 has a lower pitch (than whistle 3)
Total
© UCLES 2014
4
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1 mark for each
Accept converse argument
for each answer
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3
Question
Part
4
Mark
1
Total
1
Question
5
Part
Mark
(a)
(b)
(i)
(ii)
Total
© UCLES 2014
Answer
Further Information
(Coral reef fish is a) clownfish.
Answer
Further Information
1
Diagram should show regular arrangement of
close packed particles
The regular arrangement
does not need to fill the
box.
1
In diffusion the perfume moves from an area of
high concentration to an area of low
concentration.
Accept higher/lower,
more/less
1
Both required for 1 mark
(idea that) particles move or spread out
3
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4
Question
6
Part
Mark
(a)
1
Answer
Further Information
Yes
No mark for yes – marks
are for the explanation
quotes some information from the table such as
Mercury is closest to Sun and shortest time for
orbit
(b)
(i)
2
No
Earth is cooler than Mars but closer to the Sun
No mark for no – marks
are for the explanations
Mercury is cooler than Venus but closer to the
Sun
1
information about more planets
Accept find another
source to check the
evidence obtained
(c)
1
(strength of) gravity is higher on Earth than Mars
Accept mass of Earth is
greater than Mars
Total
5
(ii)
© UCLES 2014
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5
Question
Part
(a)
7
Mark
Answer
Further Information
Either order
(i)
1
Coo (and) Lam
(ii)
1
the ones that produce the most eggs
(b)
2
2 correct = 2 marks
size of eggs
9
1 correct = 1 mark
amount of milk produced
If 3 boxes ticked, 2
correct = 1 mark
low life expectancy
If 3 boxes ticked, 1
correct = 0 marks
number of feathers
If 4 or 5 or 6 boxes
ticked, 2 correct = 0
marks
colour of feathers
resistance to disease
Total
4
Question
8
9
Part
Mark
(a)
1
Igneous rocks are formed when molten lava from a
volcano cools down.
(b)
1
Sedimentary rocks are made from grains of rock
that are cemented (stuck) together.
(c)
1
Metamorphic rocks are made when heat and
pressure change other types of rock.
(d)
1
Sedimentary rocks are found in layers and often
contain fossils.
Total
4
© UCLES 2014
Answer
Further Information
1113/01/SM/14
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6
Question
9
Part
Mark
(a)
2
Answer
Further Information
A – coil or wire
B – core
2
(b)
part A – material: copper
part B – material: iron
Total
4
Question
10
Part
Mark
Answer
(a)
2
diet
health problem
too much sugar
heart disease
too much fat
tooth decay
too much salt
high blood pressure
too little protein
little energy
too little carbohydrate
poor growth
Further Information
4 correct = 2 mark
2 or 3 correct = 1 mark
1 correct = 0 marks
(b)
(i)
1
pineapple (and) banana
Both required, either
order
(ii)
1
(idea that it) keeps the digestive system healthy /
speeds up the movement of waste out of the body /
helps prevent (bowel) cancer
Accept prevents
constipation
(iii)
1
fruits contain very little fat (or no fat) / there is less
fat than fibre in fruit
(iv)
1
mass / size / volume
Total
© UCLES 2014
6
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7
Question
11
Part
Mark
(a)
3
Answer
Further Information
length
in cm
temperature
before in °C
temperature temperature
at end in °C change in °C
1
20
22
2
2
21
25
4
3
21
27
6
4
21
26
5
5
21
31
10
6
22
34
12
(b)
1
result for 4 cm
(c)
1
exothermic
Total
5
Question
12
Part
Mark
(a)
1
newtonmeter / forcemeter
(b)
1
(idea of) checking reliability / identify anomalous /
odd / unusual results
(c)
1
9.7
(d)
1
32.6 - first row second number
Total
4
© UCLES 2014
Correct data recorded in
table = 1 mark
Correct headings =
1 mark
Correct temperature
changes entered in table
= 1 mark
Accept if not in correct
order but data is same
This can be highlighted
on the table or written
down
Answer
Further Information
1113/01/SM/14
366/409
Accept answer written
on paper by (d)
Combined By NESRINE
Cambridge International Examinations
Cambridge Secondary 1 Checkpoint
1113/02
SCIENCE
Paper 2
For Examination from 2014
SPECIMEN MARK SCHEME
MAXIMUM MARK: 50
This document consists of 7 printed pages and 1 blank page.
IB14 1113_02_SM/3RP
© UCLES 2014
[Turn over
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2
Question
1
Part
Mark
Answer
(a)
3
part
function
3 or 4 correct = 3 marks
flower
photsynthesis
2 or 3 correct = 2 marks
leaf
absorption of water
root
transport of water
and minerals
stem
reproduction
(b)
2
Total
5
Question
2
Part
Mark
(carbon dioxide)
Further Information
+
water
(glucose)
Answer
1 correct = 1 mark
Accept line from root to
transport of water and
minerals
+
oxygen
water / H2O as reactant =
1 mark
oxygen / O2 as product =
1 mark
Further Information
2
5 correct = 2 marks
metal or non-metal
metal
3 or 4 correct = 1 mark
1 or 2 correct = 0 mark
metal
non-metal
non-metal
metal
Total
© UCLES 2014
2
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Accept non-metal for last
row (graphite)
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3
Question
3
Part
Mark
Answer
Further Information
(a)
1
The person does not sink into the snow because
the force acts on a larger area so that the
pressure is less.
All three in correct order
needed = 1 mark
(b)
1
The edge of the sharp knife has a smaller area so
the force acting on the knife produces a larger
pressure.
All three in correct order
needed = 1 mark
Total
2
Question
4
Answer
Further Information
Accept a fair test
Part
Mark
(a)
1
so they start with same amounts / allows
comparisons to be made / controls a variable
(b)
1
so the algae could grow
(c)
2
(colour of algae) gets darker / increases / greener
gets lighter / decreases (after concentration of 4)
(d)
1
Total
5
Question
5
When the concentration of magnesium sulfate is 4
the algae grow fastest.
Part
Mark
(a)
1
iron
(b)
1
mercury
(c)
1
oxygen
Total
3
© UCLES 2014
Accept (colour is) greatest
at concentration of 4 /
darkest at concentration of
4 = 2 marks
Answer
Further Information
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4
Question
Part
6
Mark
Answer
Further Information
(i)
1
B
(ii)
1
A
(iii)
1
E
(b)
1
(idea of) Venus is reflecting light from the Sun
Total
4
Question
7
(a)
Part
Mark
Answer
Further Information
(a)
3
chloroplast
1 mark for each correct
answer
cell wall
(large) vacuole
(b)
1
Total
4
Question
8
chloroplast
Ignore chlorophyll
Part
Mark
Answer
Further Information
(a)
1
mantle
Do not accept magma
(b)
1
iron
(c)
1
More than one tick = 0
marks
1.1 million years old
1200 million years old
2100 million years old
3200 million years old
4600 million years old
Total
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5
Question
9
Part
Mark
Answer
(a)
1
300 (MJ)
(b)
1
600 (MJ)
Total
2
Question
10
Part
Mark
Answer
(a)
1
convection
(b)
1
conduction
Total
2
Question
11
Part
Mark
(a)
1
(b)
1
Further Information
Further Information
Answer
Further Information
oesophagus
Accept gullet
stomach
(c)
2
organ
function
food is mixed up into
a creamy liquid
large intestine
digests proteins, carbohydrates
and fats and absorbs water,
amino acids, sugars and fatty acids
3 correct = 2 marks
2 correct = 1 mark
1 correct = 0 mark
small intestine
absorbs water
stomach
Total
© UCLES 2014
food is chewed into
smaller pieces
4
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6
Question
12
Part
Mark
Answer
(a)
2
(6cm) = 2
Further Information
(11cm) = 1.5
1
(b)
the amplitude does not change with
distance
the amplitude decreases with
distance
9
the amplitude increases with
distance
there is no pattern in the results
Total
3
Question
13
Part
Mark
(a)
1
Answer
Further Information
acid
alkali
9
catalyst
metal
(b)
(i)
1
temperature
(ii)
1
Any one from:
Ignore same apparatus
concentration of hydrogen peroxide / volume of
hydrogen peroxide / amount of hydrogen peroxide
Accept particle size of
the manganese (IV)
oxide
amount of catalyst
Total
© UCLES 2014
3
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7
Question
14
Part
Mark
(a)
1
aluminium
(b)
2
carbon dioxide
Answer
oxygen
(c)
1
Further Information
copper
iron
hydrogen
lead
nitrogen
1 mark for each
water
paint
Accept coat in oil /
galvanise
Do not accept cover
unqualified
Total
4
Question
15
Part
Mark
2
Answer
Further Information
either way round
A (and) E
2 correct = 2 marks
3 written, 2 correct = 1
mark
4 written, 2 correct = 0
marks
Total
2
Question
16
Part
Mark
2
Total
© UCLES 2014
Answer
Further Information
The car is slowing down. The forces that slow the Any order
car down are air resistance and friction.
1 mark for each
2
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