Question

state the main postulates of the kinetic theory with special reference to inter particle space

Answer 1

a) (i) All particles are composed of tiny particles called atoms or molecules.

(ii) These molecules are in a state of unending motion. i.e, they possess kinetic energy.

(iii) The kinetic energy of molecules increases on supplying heat energy, i.e, the molecules start moving at a faster rate.

(iv) If the matter is cold, then the kinetic energy of molecules decreases, i.e, the molecules slow down.

(v) As the intermolecular space increases, the intermolecular force of attraction decreases and if the intermolecular space decreases, the intermolecular force of attraction increases.

 

(b)

Constituents of mixture

Nature of mixture

Examples

(i) Solid-Solid

Homogeneous

Alloys

(ii) Solid-Liquid

Homogeneous

Salt in water

(iii) Gas-Gas

Homogeneous

Air

(iv) Liquid-Liquid

Homogeneous

Milk in water

(v) Gas-Solid

Heterogeneous

Smoke

Answer 2

Answer:

A) (i) All particles are composed of tiny particles called atoms or molecules. (ii) These molecules are in a state of unending motion. ... (iii) The kinetic energy of molecules increases on supplying heat energy, i.e, the molecules start moving at a faster rate.