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Physics · Oct / Nov 2018 · Paper 11 · Question 14

5054Particle model

What increases when a liquid becomes a gas at its boiling point?

  1. Athe average kinetic energy of the molecules
  2. Bthe molecular size
  3. Cthe molecular spacing
  4. Dthe total number of molecules

As printed in the paper

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Correct answer: C. the molecular spacing

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