Question

What happens during expansion and contraction of matter?​

Answer 1

Expansion of MATTER :

All three states of matter (solid, liquid and gas) expand when heated. 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.

Contraction of MATTER :

When substances expand or contract, their particles stay the same size. It is the space between the particles that changes: the particles in a solid vibrate more when it is heated, and take up more room. the particles in a liquid move around each other more when it is heated, and take up more room.

.

.

Hope the answer helped you.

If possible or the answer helped you please mark me as BRAINLIEST.

THANKS!!!

Answer 2

When substances expand or contract, their particles remain the same size. The space between the particles changes (it applies to all states of matter).

Expansion of a matter

The particles in a matter move more when it is heated, and take up more space.

Contraction of a matter

The particles in a matter move less when it is cooled, and take up less space.

Hope it helps!!!