Classify the following into solids, liquids and gases.

Oxygen, milk, common salt, wax, stone, L.P.G., carbon dioxide, sugar, mercury, coal, blood, butter, copper, coconut oil, kerosene.

Name the smallest particle from which matter is made of.

Define:

(a) Intermolecular force of attraction.

(b) Intermolecular space.

(c) Cohesive force

(d) Diffusion

(e) Brownian movement

Give one difference between atoms and molecules.