Question

what is the difference between vapourisation and boiling

Answer 1

Vaporization (or vapourisation) of an element or compound is a phase transition from the liquid phase to vapor. There are two types of vaporization: evaporation and boiling. 

BOILING

The term Boiling is defined as the process in which the liquid phase changes to gaseous phase at a constant temperature is called as Boiling. The point where the liquid changes into gaseous state at a given pressure and temperature is called as ‘Boiling Point’. The boiling point of the water is 100°c at normal atmospheric pressure.

EVAPORATION

The term Evaporation is defined as the process of escaping of liquid molecules from the surface of a liquid at any temperature is called evaporation. The rate of evaporation of a liquid depends on its surface area, temperature and amount of water vapour present in the surronding air.

Answer 2

Evaporation
1. The conversion of liquid into vapour at any temperature below its boiling point is known as evaporation
2. Evaporation is a surface phenomena
3. Evaporation can take place with or without heating
4. Evaporation cause cooling
5. Evaporation is slow process
BOILING
1. The process of conversion of liquid into gas at a fixed temperature is known as boiling
2. Boiling is a bulk phenomenon
3. It is compulsory to heat the liquid during boiling
4. Boiling doesn't cause any cooling
5. It is fast process
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