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

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Question 23

A sealed metal canister of constant volume contains helium gas. The canister is placed in a refrigerator, causing the temperature of the gas to decrease.

What is the effect on the average speed of the helium atoms and the average distance between them?

A

Average speed decreases; average distance decreases

B

Average speed decreases; average distance stays the same

C

Average speed increases; average distance increases

D

Average speed increases; average distance stays the same

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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