Question

What do you understand by the change of state? What are the various interconversion processes of states of matter?

Answer 1

The change of state is the transition of three states of matter from one to another by losing or gaining heat. Example: Transition of ice(solid) into water (liquid).

1. Melting: The process of conversion of solid into liquid on gaining heat.
2. Freezing: The process of conversion of liquid into solid on losing heat.
3. Sublimation: The process of conversion of solid into gas on gaining heat.
4. Deposition: The process of conversion of gas into solid on losing heat.
5. Boiling: The process of conversion of liquid into gas on gaining heat.
6. Evaporation: The process of conversion of liquid into gas on gaining heat below the boiling point of the liquid.
7. Condensation: The process of conversion of gas into liquid on losing heat.