Question

Give 3 differences between evaporation and boiling

Answer 1

1.)evaporation is a surface phenomenon whereas boiling is a bulk phenomenon.
2.)evaporation does not occurs at the boiling point whether it occurs below its boiling point whereas boiling occurs at boiling point.
3.)evaporation does not produce bubbles whereas boiling produce bubbles.
4.)evaporation can be occur in any temperature whereas boiling can be occur at a specific temperature.
5.)evaporation is a slow process whereas boiling is a fast process
6.)in evaporation few particles move fast and few at slow rate whereas the motion of particles is fast in boiling.
7.)evaporation occurs on the surface of the liquid whereas boiling occurs in the entire mass of the object.

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Answer 2

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Boiling:-

▼ During boiling, a liquid changes into a gaseous state at a constant temperature, called its boiling point

▼ This process needs an external source of heat energy

▼ It is a bulk process in which the gaseous state is formed form all parts of the liquid followed by the agitation of the liquid

▼ The boiling doesn't cause cooling

▼ Boiling of a liquid is good indicator of the strength of intermolecular forced between the molecules of a liquid

Evaporation :-

▼ During evaporation, a liquid. Changes into a gaseous state at any temperature below its boiling point

▼ this phenomenon doesn't need any external source of heat energy

▼ it is not a bulk process in which the gaseous state is formed from only the exposed state is formed form only the exposed surface of the liquids

▼ The evaporation causes cooling

▼ Evaporation of the liquid is a spontaneous phenomenon so does not indicate any such strength