State the main postulates of kinetic theory of matter.

The main postulates of kinetic theory of matter are:

1. Matter is composed of very small particles called atoms and molecules.
2. The constituent particles of a kind of matter are identical in all respects.
3. These particles have spaces or gaps between them which are known as inter-particular or inter-molecular spaces.
4. A force of attraction exists between the particles of matter which holds them together known as interparticular or intermolecular force of attraction.
5. Particles of matter are always in a state of random motion and possess kinetic energy which increases with an increase in temperature and vice-versa.