Question

Explain the factors affecting evaporation.

Answer 1

Question:

Explain the factors affecting evaporation?

Answer:

◆ The process of conversion of a substance from the liquid state to the gaseous state at any temperature below its boiling point is called evaporation or vaporisation.

◆ Evaporation is a surface phenomenon.

Factors affecting the rate of evaporation:

◆ The rate of evaporation increases on increasing the surface area of the liquid.

◆ The rate of evaporation increases with an increase in temperature.

◆ Decrease in the humidity increases the rate of evaporation.

◆ An increase in the wind speed increases the rate of evaporation.

Evaporation causes cooling:

◆ The particles of liquid absorb energy from the surrounding to regain the energy lost during evaporation. This absorption of energy from the surroundings make the surroundings cold.

The particles of liquid absorb energy from the surrounding to regain the energy lost during evaporation. This absorption of energy from the surroundings make the surroundings cold.◆ Lately, scientists are talking about five states of matter or five phases of matter. These are-solids, liquids, gases, plasmas and the Bose–Einstein condensate.

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Answer 2

The factors affecting evaporation are the following :-

1)Temprature

2) surface area

3)Humidity

1)Temprature:- The rate of evaporation increases when the temperature increases.

2) Surface area :-The rate of evaporation increases when the surface area increases

3)Humidity:- The amount of water vapour present in atmosphere is known as humidity.

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