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

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.

$(a)$ What is matter? Write two properties of solids and two properties of liquids.
$(b)$ Ramesh took two beakers $A$ and $B$ containing hot water and cold water respectively. In each beaker,he dropped a crystal of copper sulphate. He kept the beakers undisturbed. After some time,what did he observe? Why?

$(a)$ Define boiling point.
$(b)$ Express the boiling point of water in Celsius as well as Kelvin scale.
$(c)$ $A$ diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

State whether the following statement is true or false:
The diffusion in liquids depends upon the thickness (viscosity) as well as on the chemical nature of the diffusing liquids.

Water as ice has a cooling effect,whereas water as steam may cause severe burns. Explain these observations.