Physics 0625 · IGCSE · Kinetic particle model of matter

Kinetic particle model of matter — practice question

A test-tube holds $1.0\,\mathrm{cm}^3$ of liquid water at $100\,^{\circ}\mathrm{C}$. The liquid water boils and becomes $1600\,\mathrm{cm}^3$ of steam. What causes the large increase in volume?

  • ASteam particles are bigger than water particles.
  • BThe average distance between the particles is much greater in the steam.
  • CThe particles do not move until the water turns into a gas.
  • DThere are more steam particles than there were water particles.

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