All solids on heating first change into liquid and then to gaseous state.

For the given statement, say whether it describes a solid, a liquid or a gas.

Particles move about very quickly but do not leave the surface.

For the given statement, say whether it describes a solid, a liquid or a gas.

Particles are quite close together.

For the given statement, say whether it describes a solid, a liquid or a gas.

Particles are far apart and move in all directions.

Give two examples for the following:

Substances which do not change their state.

Give two examples for the following:

Substances which are rigid and not compressible.