What is evaporation? Why it causes cooling? Illustrate with two examples?
Answers
Answer:
Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase. The surrounding gas must not be saturated with the evaporating substance. When the molecules of the liquid collide, they transfer energy to each other based on how they collide with each other
When evaporation occurs then than the liquid (mostly water) absorbs all the heat from the surroundings and take it with it and we feel cool. evaporation causes cooling effect because the heat energy is abosorbed by surrounding particles.
Answer:
The process of conversion of liquid into vapour by heating is called evaporation. The particles of liquids absorbs energy lost during evaporation. This causes cooling. Thus, evaporation causes cooling. Example - 1 when we pour acetone means nail polish remover on our palm then it is quickly vaporished. The wet clothes become dry because of evaporation