Question

Give reasons : (a) Solids are rigid and retain their shape. (b) Liquids and gases expand on heating. (c) A solid does not flow but a fluid flow ​

Answer 1

Answer:

Liquids expand for the same reason, but because the bonds between separate molecules are usually less tight they expand more than solids.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.