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Physics · May / June 2019 · Paper 12 · Question 24

5054Particle model

A gas is enclosed in a container of fixed volume. The gas gains heat energy from an external source. What happens to the molecules of the gas?

  1. AThey expand.
  2. BThey move faster inside the container.
  3. CThey move further apart.
  4. DThey vibrate with greater frequency.

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Correct answer: B. They move faster inside the container.

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