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

Account for the following:
$(a)$ When sugar crystals dissolve in water,the level of water does not rise appreciably.
$(b)$ Doctors advise to put strips of wet cloth on the forehead of a person having high fever.
$(c)$ Naphthalene balls disappear with time without leaving any solid residue.
$(d)$ $A$ wooden table should be called a solid.
$(e)$ Dogs generally hang out their tongue in summer.

Why is evaporation called a surface phenomenon?

The kinetic energies of water particles in three vessels $A, B$,and $C$ are $E_A, E_B$,and $E_C$ respectively,where $E_A > E_B > E_C$. Arrange the temperatures $T_A, T_B$,and $T_C$ of the water in the three vessels in increasing order. Provide a reason for your answer.

$(a)$ 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?

Archit dropped a crystal of potassium permanganate into two beakers $A$ and $B$ containing hot water and cold water respectively. After keeping the beakers undisturbed for some time,what did he observe and why?