Question

1.Differentiate between evaporation and condensation.

Answer 1

Evaporation	Condensation
1.The process in which a liquid changes into its vapour state, is called evaporation.	1.The process in which vapours changes into liquid state on cooling, is called condensation.
2.When a liquid is heated or pressure is reduced, the forces of attraction between molecules are reduced. After that, the liquid turns into a gas.	2.The forces of attraction between molecules become stronger when a gas is cooled or the pressure is increased. After that, the gas condenses into a liquid or perhaps a solid.
3.Energy is consumed during evaporation.	3.Energy is consumed during condensation.
4.For example, salt can be separated from solution by evaporation.	4.For example, formation of clouds takes place by condensation.