Page 8 - ACE YR IGCSE A TOP APPROACH TO CHEM

(d) Draw the arrangement of particles of ice cream in situation B.

[2]
[Total: 9]
Penerbitan Pelangi Sdn Bhd. All Rights Reserved.

4 The diagram shows what a scientist sees under a microscope.
Smoke particle

(a) What is this movement called?

[1]

(b) Describe and explain why particles move in this way.

[3]

(c) Aside from smoke in the air, what other evidence for this movement?

[1]

(d) Bromine gas fills up another container after 5 minutes due to the occurrence of diffusion.

After 5 minutes

(i) What is diffusion?

[3]

Chapter 1 States of Matter 5

Chapter 1.indd 5 3/4/22 11:57 AM