Please check the examination details below before entering your candidate information
Candidate surname
Centre Number
Other names
Candidate Number
Pearson Edexcel International Award in Lower Secondary
Time 1 hour 20 minutes
Science
Paper
reference
LSC11/01
 
Achievement Test
You must have:
Calculator, ruler
Total Marks
Instructions
black ink or ball-point pen.
• Use
Fill
in
boxes at the top of this page with your name,
• centrethe
number and candidate number.
all questions.
• Answer
the questions in the spaces provided
• Answer
– there may be more space than you need.
Information
total mark for this paper is 80.
• The
marks for each question are shown in brackets
• The
– use this as a guide as to how much time to spend on each question.
• Candidates may use a calculator.
Advice
each question carefully before you start to answer it.
• Read
to answer every question.
• Try
• Check your answers if you have time at the end.
Turn over
P67632A
©2022 Pearson Education Ltd.
Q:1/1/1/1/
*P67632A0136*
SECTION A
Answer ALL questions.
For Questions 1–5 put a cross in one box to indicate your answer.
If you change your mind, put a line through the box and then put a cross in another box .
Each question is worth one mark.
1 Scurvy is an illness caused by a lack of which vitamin?
A vitamin A
B vitamin B
C vitamin C
D vitamin D
(Total for Question 1 = 1 mark)
2 Which is the correct formula for carbon dioxide?
A C2O
B CO2
C 2CO
D C2O
(Total for Question 2 = 1 mark)
3 Which process is responsible for the movement of substances into and out of cells?
A absorption
B diffusion
C evaporation
D photosynthesis
(Total for Question 3 = 1 mark)
2
*P67632A0236*

4 Which row of the table best describes a physical change and a chemical change?
Physical change
Chemical change
A
is reversible
a new substance is formed
is reversible
a new substance is formed
B
is not reversible
a new substance is formed
is not reversible
no new substance is formed
C
is reversible
no new substance is formed
is not reversible
a new substance is formed
D
is not reversible
no new substance is formed
is reversible
no new substance is formed
(Total for Question 4 = 1 mark)
5 Which energy store gains energy when a book is lifted up onto a high shelf?
A chemical energy store
B elastic potential energy store
C gravitational potential energy store
D thermal energy store
(Total for Question 5 = 1 mark)

*P67632A0336*
3
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6 The diagram shows some salt being dissolved in water to make a mixture of
salt and water.
salt
mixture of salt
and water
stir
water
Complete the sentences below using words from the box.
(3)
compound element solid solute solution solvent
When the salt has dissolved in the water a .............................................................................................
is formed.
In this process the water is the . . . . . . . ...................................................................................... and the salt
is the ...... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ................... .
(Total for Question 6 = 3 marks)
4
*P67632A0436*
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7 The cells of animals, plants and bacteria are different from each other.
Draw one straight line from each cell type to its correct description.
Cell type
Description
animal
has a cell wall, a nucleus
and cytoplasm
bacteria
has no cell wall but has a nucleus
and cytoplasm
has no cell wall or nucleus but
has cytoplasm
plant
(Total for Question 7 = 2 marks)
8 Different methods can be used to separate a substance from a mixture.
Draw one straight line from each method of separation to its possible use.
Method of separation
Possible use
simple distillation
to obtain sand from a mixture of
sand and water
evaporation
to obtain water from salt solution
filtration
to obtain solid copper sulfate from
copper sulfate solution
(Total for Question 8 = 2 marks)

*P67632A0536*
5
Turn over
9 The diagram shows a bar magnet.
N
S
Describe one way of showing the shape of the magnetic field around the bar magnet.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 9 = 2 marks)
10 Different parts of the ear have different functions.
Draw one straight line from each ear part to its function.
Ear part
Function
outer ear
collects and directs sound waves
ear drum
converts vibrations into
electrical signals
inner ear
vibrates when hit by sound waves
(Total for Question 10 = 2 marks)
6
*P67632A0636*
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11 This question is about the metals copper and zinc and an unknown metal X.
The table shows if a chemical reaction occurs when each of the metals is placed in a
solution of zinc sulfate and in a solution of copper sulfate.
Metal
copper
X
zinc
Reaction with
zinc sulfate solution
Reaction with
copper sulfate solution
no reaction
no reaction
reaction
reaction
no reaction
reaction
(a) Give the order of reactivity of the three metals, starting with the most reactive.
most reactive
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................................................
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................................................
least reactive
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .....................................................
(b) Name the type of chemical reaction that occurs between zinc metal and
copper sulfate solution.
(1)
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 11 = 2 marks)

*P67632A0736*
7
Turn over
12 The graph shows how the gravitational field strength of the Earth varies with
increasing distance from the Earth.
The gravitational field strength on the surface of the Earth is 10 N / kg.
10
gravitational
field strength
in N / kg
0
0
increasing distance from the Earth in km
An astronaut has a mass of 75 kg.
(a) How does the mass of the astronaut change as they move away from the Earth?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) How does the weight of the astronaut change as they move away from the Earth?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 12 = 2 marks)
8
*P67632A0836*

For Questions 13–17 put a cross in one box to indicate your answer.
If you change your mind, put a line through the box and then put a cross in another box .
13 Which of the following statements about electrical resistance is correct?
A a copper wire has a high electrical resistance
B electrical resistance is measured in ohms
C electrical resistance measures the flow of electrons in a wire
D electrical resistance is measured in newton metres
(Total for Question 13 = 1 mark)
14 Why can antibiotics not be used to help treat people infected with the flu virus?
A the flu virus is too small for antibiotics to be effective against it
B antibiotics only work with bacteria and flu is a virus
C scientists have not developed a suitable antibiotic to treat the flu virus
D the flu virus is too large for antibiotics to be effective against it
(Total for Question 14 = 1 mark)
15 Which of these substances when added to calcium carbonate would cause
carbon dioxide to be produced?
A dilute hydrochloric acid
B dilute sodium hydroxide solution
C magnesium ribbon
D water
(Total for Question 15 = 1 mark)
16 Which of the following is an example of inter-specific competition?
A competition between weeds and other plants for nutrients in a garden
B competition between two male antelopes for a mate
C oak trees that grow very close together in a forest competing for sunlight
D two lions fighting over food
(Total for Question 16 = 1 mark)

*P67632A0936*
9
Turn over
17 A person walks for 3 hours and travels 9 km.
Which row of the table shows their speed in km / h and in m / s?
Speed in km / h
Speed in m / s
A
0.33
0.09
B
3.0
0.28
C
3.0
0.83
D
27.0
2.5
(Total for Question 17 = 1 mark)
10
*P67632A01036*

18 This question is about static electricity.
Complete the table by putting one tick () in each row to show if each statement is
true or false.
The first row has been done for you.
Statement
True
static electricity can cause small electric shocks
False

some objects become charged with
static electricity when they are rubbed together
if two positively charged objects come near to
each other they will attract each other
if two negatively charged objects come near to
each other they will attract each other
(Total for Question 18 = 1 mark)

*P67632A01136*
11
Turn over
19 The diagram shows a typical animal cell.
Use terms from the box to complete the labels on the diagram.
cytoplasm chloroplast nucleus mitochondria vacuole
......................................................................................... . . . .
........................................................................................ . . . . .
(Total for Question 19 = 2 marks)
12
*P67632A01236*

20 Some examples of energy stores and the way energy can be transferred are shown in
the box.
chemical energy
elastic potential energy
electricity
forces
gravitational potential energy
heating
kinetic energy
light waves
sound waves
The diagram shows a simple electric circuit.
Use terms from the box to complete these sentences.
(a) The cell in the circuit stores energy as ............................................................................................. .
(1)
(b) When the switch is closed energy is transferred to the bulb
by .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..................... .
(1)
(c) The bulb transfers energy to the surroundings by
............ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............
and by ............................................................................................. .
(1)
(Total for Question 20 = 3 marks)

*P67632A01336*
13
Turn over
21 The diagram shows a food chain which forms part of an ecosystem.
bluebird
snake
grasshopper
grass
owl
fungi
(a) Which organism is the secondary consumer in this food chain?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) (i) Which organism is the decomposer in this food chain?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(ii) State one function of a decomposer in a food chain.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 21 = 3 marks)
14
*P67632A01436*

22 Zinc oxide reacts with dilute hydrochloric acid to form a salt and water.
(a) State what type of chemical reaction this is.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) The word equation for the reaction is
zinc oxide + hydrochloric acid → zinc chloride + water
Complete the chemical equation for this reaction.
ZnO +
...............................
(1)
HCl → ZnCl2 + H2O
(Total for Question 22 = 2 marks)

*P67632A01536*
15
Turn over
23 Photosynthesis takes place in the leaves of green plants.
(a) (i) Photosynthesis produces glucose and oxygen.
Complete the word equation for photosynthesis.
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....................................................
(1)
+ water → glucose + oxygen
(ii) The graph shows how the rate of photosynthesis in a green leaf changes
during a 12-hour period from midnight to midday.
increasing rate of
photosynthesis
midnight
midday
Predict what will happen to the rate of photosynthesis during the next
24 hours.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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(b) The leaves of green plants have evolved and adapted to allow photosynthesis to
take place efficiently.
(i) Give one leaf adaptation that helps photosynthesis take place.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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(ii) State how the adaptation you have given helps photosynthesis take place.
(1)
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(Total for Question 23 = 4 marks)
16
*P67632A01636*

For Questions 24–28 put a cross in one box to indicate your answer.
If you change your mind, put a line through the box and then put a cross in another box .
24 A wheelbarrow can be considered as a lever.
Which label on the diagram is pointing towards the pivot (fulcrum)?
Y
W
Z
X
A label W
B label X
C label Y
D label Z
(Total for Question 24 = 1 mark)
25 An atom of carbon can be represented as
C
14
6
What is the mass number of this atom?
A 6
B 12
C 14
D 20
(Total for Question 25 = 1 mark)

*P67632A01736*
17
Turn over
26 Which statement describes a population?
A a community of animals and plants together with where they live
B all the different organisms that live together in one place
C all the organisms of the same species living together
D the place where an organism lives
(Total for Question 26 = 1 mark)
27 The diagram shows the positions of four elements P, Q, R and S in Group 1 of the
Periodic Table.
P, Q, R and S are not the actual chemical symbols for these elements.
Group 1
P
Q
R
S
Which element is likely to be most reactive?
A element P
B element Q
C element R
D element S
(Total for Question 27 = 1 mark)
28 What is the correct unit for the moment of a force?
A kilograms
B minutes
C newtons
D newton metres
(Total for Question 28 = 1 mark)
18
*P67632A01836*

29 (a) Methane is a hydrocarbon that can be burned to produce energy.
When methane burns it reacts with the oxygen in the air.
One of the products is water.
Tick the name of the other product.
(1)
carbon dioxide
carbon hydroxide
hydrogen
oxygen
water

(b) There are many different types of chemical reaction.
The names of some types of chemical reaction are given in the box.
combustion exothermic
oxidation reduction thermal decomposition
Use reaction types from the box to complete the sentences.
(i) Reactions in which heat energy is used to break down a compound are
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...................................................................................
reactions.
(1)
(ii) Reactions involving the loss of oxygen are
.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...................................................................................
reactions.
(1)
(Total for Question 29 = 3 marks)

*P67632A01936*
19
Turn over
30 Lynx prey on hares.
The graph shows how the populations of lynx and hares vary in a particular habitat
over a number of years.
18
16
14
12
Key:
number of 10
animals in
thousands 8
hare
lynx
6
4
2
0
2000 2001 2002 2003 2004 2005 2006 2007
year
(a) What happens to the population of hares from 2002 to 2004?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) Why does the number of lynx start to increase in 2006?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 30 = 2 marks)
20
*P67632A02036*

31 Steel reinforced concrete is a composite material used to make beams in the
construction of large buildings.
A weight on a beam causes it to be both stretched and squashed at the same time.
this part of the beam
is squashed
weight
beam
this part of the beam
is stretched
Explain with reference to its properties why steel reinforced concrete is better than
concrete alone for making a beam.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 31 = 3 marks)

*P67632A02136*
21
Turn over
32 The circuit diagram shows a battery with a voltage of 4.5 V connected to a bulb.
The bulb has a resistance of 36 Ω.
The relationship between voltage, current and resistance is shown in this equation.
voltage = current × resistance
(a) Calculate the size of the current that flows in the circuit.
(2)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
current = ............................... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A
(b) When the bulb gets hot its resistance increases.
State what effect this has on the size of the current in the circuit.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 32 = 3 marks)
22
*P67632A02236*

33 The table compares the main features of aerobic respiration and
anaerobic respiration.
Complete the table to show the two products formed during aerobic respiration.
Aerobic Respiration
Anaerobic Respiration
Uses oxygen
Yes
No
Uses glucose
Yes
Yes
Products formed
Lactic acid only
(Total for Question 33 = 1 mark)

*P67632A02336*
23
Turn over
34 The diagram shows a beam with a different weight on each end.
The beam is not balanced and this will cause it to rotate.
0.8 m
4.0 m
24 N
5N
Explain which way the beam will rotate.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 34 = 2 marks)
24
*P67632A02436*

35 An amoeba is a single cell organism.
It has a large surface area to volume ratio which helps with the transfer of oxygen
into the single cell.
(Source: © Kazakova Maryia / Shutterstock)
The surface area and volume of an amoeba are:
surface area = 0.06 mm2
volume = 0.000001 mm3
Calculate the surface area to volume ratio for the amoeba.
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
surface area to volume ratio = ................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : 1
(Total for Question 35 = 1 mark)
TOTAL FOR SECTION A = 60 MARKS

*P67632A02536*
25
Turn over
BLANK PAGE
26
*P67632A02636*

SECTION B
Answer ALL the questions. Write your answers in the spaces provided.
36 A student investigates how changing the number of turns on an electromagnet
affects the strength of the electromagnet.
The diagram shows the apparatus the student uses.
iron nail
A
electromagnetic coil
made from turns of
insulated wire
power supply
steel balls
(a) These are the steps in the student’s method. The steps are not in the correct order.
Step P: place the coil 2 cm above some steel balls
Step Q: count the number of steel balls picked up by the electromagnet
Step R: wind 100 turns of insulated wire around an iron nail to make a coil
Step S: switch on the power supply
Step T: connect the coil to the power supply
Place the steps in the order they should be done.
Two of the steps have been done for you.
→

T
→
(2)
→
S
*P67632A02736*
→
27
Turn over
(b) The student repeats the investigation with coils made of 150, 200, 250 and 300
turns of insulated wire.
(i) State the independent variable in this investigation.
(1)
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(ii) State the dependent variable in this investigation.
(1)
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(iii) State one other variable that the student needs to control in this investigation.
(1)
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(c) The table shows the student’s results.
Number of turns on coil
Number of steel balls
picked up
100
8
150
16
200
24
250
31
300
36
On the grid opposite
(i) Add a suitable scale on the vertical axis.
(ii) Plot the results given in the table.
(iii) Join the points with a curve of best fit.
28
*P67632A02836*
(1)
(2)
(1)

number of
steel balls
picked up
0
100
200
300
number of turns on coil
(d) What conclusion can the student make about the relationship between the
number of turns on the electromagnet and the strength of the electromagnet?
(2)
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................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 36 = 11 marks)

*P67632A02936*
29
Turn over
37 A student observes that magnesium ribbon burns in air with a bright white flame,
forming a white ash.
The student investigates how the mass of the magnesium changes when it is burned
in a crucible.
crucible with lid
magnesium ribbon
heat
The student measures the mass of the crucible and lid and the mass of a piece
of magnesium ribbon.
The student puts the magnesium in the crucible, places the lid on the crucible, and
heats the crucible very strongly so that the magnesium burns.
The lid prevents any ash escaping.
After the crucible has cooled, the student measures the total mass of the crucible,
lid and ash.
(a) Name the piece of equipment the student should use to measure mass in
this investigation.
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
30
*P67632A03036*

(b) The table shows the student’s results.
mass of crucible and lid
27.225 g
mass of magnesium
0.343 g
total mass of the crucible, lid and ash
27.785 g
(i) Calculate the mass of the ash in the crucible.
(1)
mass = .............................. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . g
(ii) Before the investigation the student made this prediction.
“The mass of the ash that forms when magnesium burns
will be less than the starting mass of magnesium.”
Using the student’s results and the reaction that takes place, explain why the
results do not support the prediction.
(2)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(c) How could the results of the investigation be made more reliable?
(1)
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 37 = 5 marks)

*P67632A03136*
31
Turn over
38 (a) Describe how you would measure a person’s pulse rate.
(2)
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................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(b) Two people do the same exercise for 10 minutes.
The graph shows how their pulse rates change before, during and after exercise.
160
140
person A
120
person B
100
pulse rate
in beats
per minute
80
60
40
20
0
0
10
Key: 32
20
30
40
time in minutes
before exercise 50
during exercise *P67632A03236*
60
70
after exercise

Person B claims to be fitter than person A.
State two ways in which the graph supports this claim.
(2)
1 ............................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 ............................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ............................................................................................................................................ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Total for Question 38 = 4 marks)
TOTAL FOR SECTION B = 20 MARKS
TOTAL FOR PAPER = 80 MARKS

*P67632A03336*
33
BLANK PAGE
34
*P67632A03436*

BLANK PAGE

*P67632A03536*
35
BLANK PAGE
36
*P67632A03636*
