Question

define evaporation what are the factors affecting evaporation​

Answer 1

Evaporation :

• The process by which an element or compound transitions from its liquid state to its gaseous state below the temperature at which it boils.

• In easy way , the process by which liquid water enters the atmosphere as water vapour.

Examples :

• Evaporation of acetone which is used for removing nail paint is another everyday example of evaporation.

• The melting of an ice cube is an example of evaporation.

• Drying clothes under the Sun.

• Ironing of Clothes.

• Preparation of Common Salt

→ Evaporation is a fundamental part of the water cycle and is constantly occurring throughout nature.

Factors affecting evaporation :-

$\bullet \: \:$ Temperature : The more the temperature is , the more rate of evaporation take place.

$\bullet \: \:$ Humidity : Evaporation also depends on the humidity in the air. Humidity refers to amount of water vapours present in the air.

$\bullet \: \:$ Wind : Evaporation depends on the speed of wind also.

$\bullet \: \:$ Water : Water quality , the presence of solute in the water also reduces evaporation rate.

$\bullet \: \:$ Latent Heat : Heat is required to break the bonds between the molecules to convert them into vapours.

$\bullet \: \:$ Area : The larger the area , the higher the evaporation takes place.

Answer 2

Answer:

The change of state from liquid to gas at all temperatures from its surface is called evaporation. Evaporation is a slow process.

Explanation:

Factors affecting evaporation :-

→ Effect of temperatures on the rate of evaporation: The rate of evaporation increase with the increase in temperature of liquid.

→ Effect of blowing of air on the rate of evaporation: When air is blown above the surface of liquid, the rate of evaporation increases.

→ Cooling produced during evaporation: When a liquid evaporates, it produces cooling on its surroundings.

→ Effect of presence of humidity: In presence of humidity, the rate of evaporation becomes slow because vapour molecules do not find space to escape.

→ Effect of increase in area of surface on the rate of evaporation: On increasing the area of surface exposed to air the rate of evaporation increases.