Question

Explain why do gases expand more than solids on heating

Answer 1

Answer:

heat causes the molecules to move faster and the volume of gas increases more than the volume of solid or liquid

Answer 2

Answer:

Heat causes the molecules to move faster, (heat energy is converted to kinetic energy) which means that the volume of a gas increases more than the volume of a solid or liquid. However, gases that are contained in a fixed volume cannot expand - and so increases in temperature result in increases in pressure.