Question

Differentiate between

Boiling point and Condensation point.

Answer 1

Boiling point	Condensation point
1. Boiling point is that constant temperature at which the liquid just starts to convert into a gas (i.e. phase change.)	1. Condensation point is that constant temperature at which the water vapour just starts to convert into liquid (i.e.water.)
2. Heat is required to boil a liquid, which is usually water. This is called the heat of vaporization and is a known quantity.	2. When heat is removed from the vapor and the temperature is reduced, water vapor gets converted into water in the liquid form.
3. Temperature need to be constant when boiling occurs i.e. phase change.	3. Temperature need not be remain constant.
4. Boiling takes place at every part of the liquid.	4. Condensation can take place either at the surface or in the whole water vapour.
5. Example, boiling of water	5. For example, formation of dew, liquid discharge from air conditioners, etc.