CAMBRIDGE IGCSE™ CHEMISTRY: END-OF-CHAPTER 1 TEST
Name
Date
End-of-chapter 1 test
1 Use the words A, B, C, D or E to answer the following questions.
Each word may be used once, more than once or not at all.
boiling
diffusing
condensing
freezing
melting
a Which word describes particles of liquid gold changing to a solid?
___________________________________________________________________________
[1]
b Which word describes the same change of state as evaporation?
___________________________________________________________________________
[1]
c Which two words describe a change where the particles become closer together?
___________________________________________________________________________
[2]
[Total: 4]
2 The graph shows how the temperature changes as a liquid cools.
Figure 1.1: Cooling curve of a pure substance.
a Describe the movement and arrangement of the particles at A.
___________________________________________________________________________
___________________________________________________________________________
[2]
b Describe the movement and arrangement of the particles at D.
___________________________________________________________________________
___________________________________________________________________________
Cambridge IGCSE™ Chemistry – Lodge © Cambridge University Press 2021
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[2]
CAMBRIDGE IGCSE™ CHEMISTRY: END-OF-CHAPTER 1 TEST
c What is happening between B and C?
___________________________________________________________________________
___________________________________________________________________________
[2]
d The container of liquid is still losing heat between B and C.
Where does this heat come from?
___________________________________________________________________________
___________________________________________________________________________
[2]
[Total: 8]
3 The diagram shows the particles in a gas enclosed in a container.
Figure 1.2: The particles in a gas enclosed in a container.
a Answer the following questions about the changes that occur.
i
What will happen to the particles in the gas if the piston is moved as shown?
[1]
________________________________________________________________________
ii What happens to the pressure in the container as a result?
[1]
________________________________________________________________________
b Describe the effect of heat on the apparatus:
i
If the gas is heated what change occurs to the particles?
[1]
________________________________________________________________________
ii What will happen to the piston when the gas is heated?
[1]
________________________________________________________________________
[Total: 4]
Cambridge IGCSE™ Chemistry – Lodge © Cambridge University Press 2021
2
CAMBRIDGE IGCSE™ CHEMISTRY: END-OF-CHAPTER 1 TEST
4 Diffusion is a term used to describe the behaviour of particles.
a What is meant by the term diffusion?
___________________________________________________________________________
___________________________________________________________________________
[2]
b Three substances that can diffuse are listed:
• a coloured dye in water
• carbon dioxide gas
• hydrogen gas
i
Which substance diffuses most slowly? Explain your answer.
________________________________________________________________________
[2]
________________________________________________________________________
ii Which substance diffuses most quickly? Explain your answer.
________________________________________________________________________
[2]
________________________________________________________________________
[Total: 6]
[Test total: 22]
END OF TEST
Cambridge IGCSE™ Chemistry – Lodge © Cambridge University Press 2021
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