Science
Stage 7
Paper 1
2022
45 minutes
No additional materials are needed.
INSTRUCTIONS
• Answer all questions.
• Write your answer to each question in the space provided.
• You should show all your working on the question paper.
INFORMATION
• The total mark for this paper is 50.
• The number of marks for each question or part question is shown in brackets [ ].
3144_01_8RP
© UCLES 2022
2
1
Look at the diagram of an animal cell.
A
B
(a) Write down the name of structure A.
[1]
(b) Write down the function of structure A.
[1]
(c) Write down the name of structure B.
[1]
(d) Write down the function of structure B.
[1]
© UCLES 2022
S/S7/01
3
2
Look at the particle models for elements X, Y and Z.
= one atom of X
X
= one atom of Y
= one atom of Z
Y
Z
(a) Write down two characteristics of an element.
1
2
[2]
(b) Element X reacts with element Z.
Look at the particle model of the substance made.
Circle the type of substance made.
compound
mixture
Explain your answer.
[2]
(c) Draw a particle model for a mixture of elements X and Y.
[1]
© UCLES 2022
S/S7/01
[Turn over
4
3
Mike makes an electrical circuit.
lamp 1
lamp 2
(a) Mike wants to turn the lamps on and off.
Which component does he add to his electrical circuit?
[1]
(b) Mike wants to add a buzzer to his electrical circuit.
Draw the electrical symbol for a buzzer.
[1]
(c) Lamp 1 and lamp 2 are in a series circuit.
Lamp 1 stops working.
Explain why lamp 2 also stops working.
[1]
© UCLES 2022
S/S7/01
5
4
Look at the diagram of the Earth, Sun and Moon.
Moon
Earth
Sun
NOT TO SCALE
(a) The Earth orbits the Sun.
Name the force that keeps the Earth in its orbit.
[1]
(b) Explain what happens during a solar eclipse.
You may use the diagram to explain your answer.
[2]
© UCLES 2022
S/S7/01
[Turn over
6
5
Mia investigates the rate of decomposition of slices of apple.
Mia:
• puts one slice of apple into each of the three dishes
• keeps the dishes at different temperatures
• records the mass of each slice of apple every day for five days.
at 4°C
at 20°C
at 30°C
(a) Write down the independent variable in this investigation.
[1]
(b) Mia wants her investigation to be a fair test.
Identify three control variables for her investigation.
1
2
3
[3]
(c) Mia measures the mass of each slice of apple every day for five days.
She uses this information to calculate the rate of decomposition.
(i) Which two pieces of equipment does Mia use to make these measurements?
and
[1]
(ii) Describe how Mia uses these measurements to calculate the rate of decomposition.
[1]
© UCLES 2022
S/S7/01
7
6
Copper carbonate is a green solid.
When copper carbonate is heated a black solid called copper oxide is made.
Carbon dioxide is also made.
(a) Write down the names of the reactant and the products in this reaction.
reactant
products
[1]
(b) A chemical reaction takes place when copper carbonate is heated.
Write down two observations that show a chemical reaction takes place.
1
2
[2]
(c) Which chemical is used to test for carbon dioxide?
[1]
© UCLES 2022
S/S7/01
[Turn over
8
7
Carlos investigates the energy stored in an elastic band.
Here is his method.
Carlos:
• stretches the elastic band to a length of 10 cm
• lets go of the elastic band
• measures the distance the elastic band travels
• repeats this experiment two more times.
elastic band
Carlos then measures the distances travelled when the elastic band is stretched to different
lengths.
He stretches the elastic band to lengths of 12 cm, 14 cm and 16 cm.
Look at the results.
length of the
stretched
elastic band
in cm
distance the elastic band travels
in cm
1st
experiment
2nd
experiment
3rd
experiment
10
78
46
80
12
120
125
124
123
14
220
220
215
218
16
380
370
400
383
average
(a) Energy is stored in the stretched elastic band.
There is an energy change when Carlos lets go of the elastic band.
Complete the diagram to suggest the types of energy released.
+
stored energy
[2]
© UCLES 2022
S/S7/01
9
(b) Name the equipment Carlos uses to measure the distance the elastic band travels.
[1]
(c) (i) One of the results is anomalous.
Circle the anomalous result in the table.
[1]
(ii) Look at the results when the elastic band is stretched to a length of 10 cm.
Calculate the average distance the elastic band travels.
Write your answer in the table.
[1]
(iii) Carlos thinks the result is anomalous because he pointed the elastic band
upwards and not sideways.
Suggest why this will make the result anomalous.
[1]
8
Complete these sentences about the water cycle.
Heat from the Sun causes water in seas, rivers and lakes to
Clouds form when water vapour in the air
.
.
Water falling as rain is called
.
Some of this water filters into the Earth’s surface.
This water is called
.
[4]
© UCLES 2022
S/S7/01
[Turn over
10
9
Look at the diagrams of the four arthropods, A, B, C and D.
A
B
C
D
NOT TO SCALE
Use the key to identify each arthropod.
1a
has two claws
go to 2
1b
does not have claws
go to 3
2a
has a segmented tail
Orconectes punctimanus
2b
does not have a segmented tail
Cancer pagurus
3a
has wings
Schistocerca gregaria
3b
does not have wings
Enantiulus armatus
Write the letter of the correct arthropod next to its name.
Orconectes punctimanus
Cancer pagurus
Schistocerca gregaria
Enantiulus armatus
[2]
© UCLES 2022
S/S7/01
11
10 Angelique has bottles of four different solutions, W, X, Y and Z.
The bottles have lost their names.
She tests each solution with Universal Indicator.
Here are her results.
solution
colour when Universal Indicator added
W
green
X
yellow
Y
purple
Z
red
(a) Draw a line to match the correct solution to its name.
solution
name
W
sodium hydroxide
(strongly alkaline)
X
distilled water
(neutral)
Y
citric acid
(weakly acidic)
Z
hydrochloric acid
(strongly acidic)
[3]
(b) Which hazard label is put onto a bottle containing a corrosive liquid?
Tick () the correct box.
[1]
© UCLES 2022
S/S7/01
[Turn over
12
11 Ahmed finds this information about six substances.
substance
property
A
high boiling point
B
low melting point
C
gas at room temperature
D
shiny
E
magnetic
F
ductile
(a) Use these properties to sort the six substances into metals and non-metals.
One has been done for you.
metal
non-metal
E
[2]
© UCLES 2022
S/S7/01
13
(b) Ahmed investigates the electrical conductivity of three metals, X, Y and Z.
Here is his equipment.
metal
Here are his results.
metal
brightness of lamp
X
dim
Y
bright
Z
bright
Ahmed concludes that metals Y and Z are better electrical conductors than metal X.
Suggest an improvement to Ahmed’s experiment to find out which is the better electrical
conductor, Y or Z.
Explain your suggestion.
improvement
explanation
[2]
© UCLES 2022
S/S7/01
[Turn over
14
12 This question is about sound.
(a) Describe how sound travels through a material.
[1]
(b) Look at the bar chart.
It shows the speed of sound through different materials.
6000
5000
4000
speed of sound
3000
in m / s
2000
1000
0
glass aluminium
air
material
(i) Suggest why sound travels quicker through glass than through air.
[1]
(ii) Predict the speed of sound through water.
m/s
Explain your answer.
[2]
(iii) Sound does not travel in a vacuum.
Explain why.
[1]
© UCLES 2022
S/S7/01
15
BLANK PAGE
© UCLES 2022
S/S7/01
© UCLES 2022
21
S/S7/01
calcium
40
38
Sr
strontium
88
56
Ba
barium
137
88
potassium
39
37
Rb
rubidium
85
55
Cs
caesium
133
87
actinoids
lanthanoids
–
Ca
K
–
actinoids
20
19
Ra
24
23
radium
89–103
magnesium
sodium
Fr
57–71
Mg
Na
francium
89
12
11
22
cerium
140
90
Th
thorium
232
lanthanum
139
89
Ac
actinium
–
231
protactinium
Pa
91
141
praseodymium
Pr
59
58
Ce
57
–
–
dubnium
Db
105
181
tantalum
Ta
73
93
niobium
Nb
41
51
vanadium
V
23
Cr
24
238
uranium
U
92
144
neodymium
Nd
60
–
seaborgium
Sg
106
184
tungsten
W
74
96
molybdenum
Mo
42
52
chromium
relative atomic mass
rutherfordium
Rf
104
178
hafnium
Hf
72
91
zirconium
Zr
40
48
titanium
Ti
La
lanthanoids
yttrium
Y
39
45
scandium
Sc
9
7
name
atomic symbol
Be
beryllium
Li
lithium
atomic number
4
3
Key
2
1
–
neptunium
Np
93
–
promethium
Pm
61
–
bohrium
Bh
107
186
rhenium
Re
75
–
technetium
Tc
43
55
manganese
Mn
25
–
plutonium
Pu
94
150
samarium
Sm
62
–
hassium
Hs
108
190
osmium
Os
76
101
ruthenium
Ru
44
56
iron
Fe
26
27
28
29
30
–
americium
Am
95
152
europium
Eu
63
–
meitnerium
Mt
109
192
–
curium
Cm
96
157
gadolinium
Gd
64
–
darmstadtium
Ds
110
195
platinum
Pt
Ir
iridium
78
106
palladium
Pd
46
59
nickel
Ni
77
103
rhodium
Rh
45
59
cobalt
Co
–
berkelium
Bk
97
159
terbium
Tb
65
–
roentgenium
Rg
111
197
gold
Au
79
108
silver
Ag
47
64
copper
Cu
–
californium
Cf
98
163
dysprosium
Dy
66
–
copernicium
Cn
112
201
mercury
Hg
80
112
cadmium
Cd
48
65
zinc
Zn
B
C
–
einsteinium
Es
99
165
holmium
Ho
67
–
nihonium
Nh
113
204
thallium
Tl
81
115
–
fermium
Fm
100
167
erbium
Er
68
–
flerovium
Fl
114
207
lead
Pb
82
119
tin
Sn
In
indium
50
73
germanium
Ge
32
28
silicon
49
70
gallium
Ga
31
27
aluminium
Si
14
13
Al
12
carbon
11
boron
6
–
mendelevium
Md
101
169
thulium
Tm
69
–
moscovium
Mc
115
209
bismuth
Bi
83
122
antimony
Sb
51
75
arsenic
As
33
31
phosphorus
P
15
14
nitrogen
N
7
–
nobelium
No
102
173
ytterbium
Yb
70
–
livermorium
Lv
116
–
polonium
Po
84
128
tellurium
Te
52
79
selenium
Se
34
32
sulfur
S
16
16
oxygen
O
8
–
lawrencium
Lr
103
175
lutetium
Lu
71
–
tennessine
Ts
117
–
astatine
At
85
127
iodine
I
53
80
bromine
Br
35
35.5
chlorine
Cl
17
19
fluorine
F
9
–
oganesson
Og
118
–
radon
Rn
86
131
xenon
Xe
54
84
krypton
Kr
36
40
argon
Ar
18
20
neon
Ne
10
4
5
helium
8
1
7
hydrogen
6
2
5
He
4
H
3
1
Group
The Periodic Table of Elements
16
Permission to reproduce items where third-party owned material protected by copyright is included has been sought and cleared where possible. Every
reasonable effort has been made by the publisher (UCLES) to trace copyright holders, but if any items requiring clearance have unwittingly been included, the
publisher will be pleased to make amends at the earliest possible opportunity.
To avoid the issue of disclosure of answer-related information to candidates, all copyright acknowledgements are reproduced online in the Cambridge Assessment
International Education Copyright Acknowledgements Booklet. This is produced annually and is available to download at
https://lowersecondary.cambridgeinternational.org/
Cambridge Assessment International Education is part of Cambridge Assessment. Cambridge Assessment is the brand name of the University of Cambridge
Local Examinations Syndicate (UCLES), which is a department of the University of Cambridge.