Page 7 - ACE YR IGCSE A TOP APPROACH TO CHEM

(ii) The graph shows how the pressure of chlorine gas changes when the temperature
increases. The volume is kept constant.

Pressure of
chlorine gas

Penerbitan Pelangi Sdn Bhd. All Rights Reserved.
Temperature

Describe and explain how the pressure of chlorine gas changes with temperature.

[3]
[Total: 12]

3 Substances can change their states. The changing of state is affected by the temperature.
The observation of an ice cream after 5 minutes is as shown below.

After 5 minutes at
room temperature
A B

(a) Name the change of state of the ice cream.

[1]

(b) Describe the arrangement and movement of particles of ice cream in situation A.

[3]

(c) Explain, in terms of the kinetic particle theory, why ice cream changes from A to B.

[3]

Cambridge IGCSE TM
4 Ace Your Chemistry

Chapter 1.indd 4 3/4/22 11:57 AM