The gases can be liquefied by

$(a)$ Define matter and write its three states.
$(b)$ Explain how these states of matter arise due to variation in the characteristics of the particles.

Why is oxygen called a gas? Support your answer by giving two reasons.

Comment on the following statements :
$(a)$ Evaporation produces cooling.
$(b)$ Rate of evaporation of an aqueous solution decreases with increase in humidity.
$(c)$ Sponge though compressible is a solid.

Why does the temperature of a substance not rise during a change of state?

Distinguish between solids,liquids,and gases in tabular form under the following characteristics:
$(a)$ Interparticle force of attraction
$(b)$ Diffusion
$(c)$ Fluidity.