Why does a liquid get cooler as it evaporates?

Answer 1

Evaporation Takes Place Layer By Layer. Then Heat, In The Stages Of Evaporation Just Effects The First Layer Of The Liquid . Heat Makes An Increase Of Enegry Between The Particles. The Particles, With That Energy, Trys To Move And Seperate ThemSelves From The Whole Liquid. The Higher Engery Partides Rise, Leaving The Less Engery Ones Behind, There For Making The Liquid Cool.

Answer 2

First of all, gas does not evaporate into a liquid. Gas condenses into a liquid.

When a gas is cooled, the particles in the gas slow down, and the next state when the particles slow down is liquid.

Answer 3

The reason is, it takes energy to take a molecule out of the liquid and make it a gas. This is called latent heat of evaporation. The heat is usually taken from the fluid. One mechanism is that the hottest (fastest moving) molecules are the ones that leave, leaving colder (slower moving) molecules behind.

You can take the example of sweating.

Sweating is one way by which your body keeps itself cool. Simple reason for it is, sweat evaporates by taking or absorbing energy (heat energy) and then it evaporates. This is how evaporation keeps us cool.

Answer 4

during the evaporation high energy molecules escape from the surface of the liquid.the average k.E of the remmaning molecules decreases

Answer 5

When a liquid turns into a gas, the water is at first warmer than the air around it causing it to rise. Since the air is cooler up high, the water molecules start to cool and condensate.