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2.1.2a Particle structure and motion in solids, liquids and gases

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Question 85

Tiny smoke particles are suspended in a closed container filled with air. A bright light shines from the side.

When looked at through a microscope, small specks of light are seen to be moving in a random, sudden, and jerky manner.

What are the moving specks of light?

A

air molecules being hit by smoke particles

B

air molecules being hit by other air molecules

C

smoke particles being hit by other smoke particles

D

smoke particles being hit by air molecules

Markscheme

2.1.2a Particle structure and motion in solids, liquids and gases Questions

  1. IGCSE
  2. /Physics
  3. /2.1.2a Particle structure and motion in solids, liquids and gases

151 exam-style questions on CIE IGCSE Physics 2.1.2a Particle structure and motion in solids, liquids and gases. Each one has a worked solution and a mark scheme showing where the marks go.

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