WHY DO SOLIDS EXPAND ON HEATING

 because their intermolecular space increases (not on a large scale).

THANXXX

thanxx

There is some ambiguity in the question asked by you. Ice contracts in volume on heating, not expands.

This question has been answered in the previous post. You can go through that. If you face any difficulty, do get back to us.

hope it helps

The particles in a solid, move very little. But when it is heated, the particles expand because the heat moves the particles around more, making them need more space to move, therefore expanding the solid.the kinetic energy also increases resulting in expansion of the solid.