Question

How does matter change from one state to another?

Answer 1

To understand how the matter changes from one state to another we first need to know the meaning of matter. Matter is anything that has mass and volume which also takes up space. All physical objects are made up of matter. Matter is composed of tiny building blocks which are known as atoms. These atoms are bonded together to form molecules. Matters can be in liquid, solid or in gaseous state.

Complete answer:
Matter changes from one state to another by heating, cooling or by other methods.
On heating the intermolecular space between the molecules increases and the intermolecular force decreases in solids and liquids and then changes the state to liquid in case of solid and gas in case of liquid
During the cooling process the intermolecular space decreases whereas intermolecular force decreases between the molecules)
The matter changes from one state to another in the following ways:-
1-From solid state to liquid on melting
2-From liquid to gaseous state by boiling
3-Gas to solid on sublimation
4-Liquid state to solid state by undergoing freezing.
5-From gaseous to liquid state on condensation

Note: Matter changes from one state to another by changing either the temperature or pressure. We can convert matter from one state to another by adding or removing energy which means by changing the temperature, the thermal energy changes due to which matter changes their state and by changing pressure also, the energy changes and matter can go in another state.