CAIE IGCSE Physics 2.1.2.6 Forces and Distances Between Particles Questions

Practise explaining changes of state using intermolecular forces and particle separation with CAIE IGCSE Physics questions and mark schemes.

Exam points

Explain changes of state using intermolecular forces and particle separation.

[Maximum number: 2]

Fig. 4.1 shows a metal pan on an electric hotplate. The pan contains $200 \mathrm{~cm}^{3}$ of water.

Fig. 4.1

The pan is heated. The temperature of the water in the pan increases.

The water boils and leaves the liquid as a gas.

Explain, in terms of forces and distances between particles, why the gas occupies a much greater volume than it does as a liquid.

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CAIE IGCSE Physics 2.1.2.6 Forces and Distances Between Particles Questions question 1