Marshall Cavendish Cambridge Primary Science (2nd edition)
Stage 6
Homework worksheet
(The following content has not been through the Cambridge Assessment International Education
endorsement process.)
Chapter 5: Properties of Matter
Worksheet 1 (Properties of Substances)
1. When air is pumped into a basketball, the basketball becomes larger in size.
(a) Which property of matter does air show?
Tick the correct answer.
 Matter can change in size.
 Matter has mass.
 Matter occupies space.
(b) State one other property of air which shows that it is matter.
________________________________________________________
2. Substances can change in state.
Under which condition(s) can a substance change in state?
Circle the correct answer.
only when it gains heat
only when it loses heat
when it gains heat or loses heat
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3. Some substances conduct electricity and others do not.
Copper is used in electrical wires. Why?
Tick the correct answer.
 It is both an electrical conductor and insulator.
 It is an electrical conductor.
 It is an electrical insulator.
4. The table shows the melting points of some solids.
Solid
A
B
C
D
Melting point (ºC)
186
1064
0
60
(a) Which solid has the lowest melting point?
_________________________________________________________
(b) What happens to a substance at its melting point?
_________________________________________________________
_________________________________________________________
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5. Thermal conductivity is a property of a substance.
(a) What is thermal conductivity?
_________________________________________________________
(b) People wear woollen clothes in winter. The woollen clothes trap a layer
of air around their bodies to keep them warm.
Photo credit: © https://pixabay.com/photos/woman-fashion-winter-gesture-cold1166842/
Is air a thermal conductor or a thermal insulator? Explain.
_________________________________________________________
_________________________________________________________
_________________________________________________________
© 2022 Marshall Cavendish Education Pte Ltd
Marshall Cavendish Cambridge Primary Science (2nd edition)
Stage 6
Homework worksheet
Chapter 5: Properties of Matter
(The following content has not been through the Cambridge Assessment International Education
endorsement process.)
Worksheet 2 (Boiling and Evaporation)
1. Boiling and evaporation take place in liquids.
Tick (√) the correct answer.
 Both processes involve a change of state from a gas to a liquid.
 Both processes involve a change of state from a liquid to a gas.
2. Puddles of water form on the ground after rain. The water in the puddles
disappears after some time.
(a) What process causes the water in the puddles to disappear?
Circle the correct answer.
boiling
evaporation
(b) What is a difference between boiling and evaporation?
Fill in the blanks. Choose from the following words.
bottom
over
surface
throughout
Boiling happens _______________ a liquid. Evaporation only happens
at the _______________ of a liquid.
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3. Boiling is a faster process than evaporation.
Complete the sentences. Choose from the following words.
bubbles
energy
heating
faster
slower
Boiling requires _______________ but evaporation does not.
This gives the particles in the liquid more _______________ to move
_______________.
4. Peter heats two liquids, A and B. He heats both liquids to the same
temperature and observes the following.
Liquid A starts boiling.
Liquid B does not boil.
(a) Which liquid has a higher boiling point?
__________________________________________________________
(b) Why does liquid B not boil? Explain using the particle model.
__________________________________________________________
__________________________________________________________
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5. The particles of a liquid are spread far apart when the liquid boils.
(a) Describe how the particles of a liquid are spread far apart during boiling.
__________________________________________________________
__________________________________________________________
__________________________________________________________
(b) What will happen to the amount of liquid if it continues to boil?
__________________________________________________________
__________________________________________________________
© 2022 Marshall Cavendish Education Pte Ltd
Answers
Worksheet 1 (Properties of Substances)
1. (a) Matter occupies space.
(b) It has mass.
2. when it gains heat or loses heat
3. It is an electrical conductor.
4. (a) Solid C
(b) It changes from a solid to a liquid.
5. (a) The ability to conduct heat
(b) Air is a thermal insulator. It is poor at conducting heat, so heat from the
body is not easily lost to the surroundings.
Worksheet 2 (Boiling and Evaporation)
1. Both processes involve a change of state from a liquid to a gas.
2. (a) Evaporation
(b) throughout; surface
3. heating; energy; faster
4. (a) Liquid B
(b) The particles of liquid B do not have enough heat to spread far apart.
5. (a) When the liquid is heated, the particles gain heat and start moving faster
and away from one another.
(b) The amount of the liquid will continue to decrease.
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