Question

why expansion and contraction of liquids is slower than gases​

Answer 1

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.

Answer 2

Answer:

because pf space b/w gass is more than in liquid