Why Does Water Spontaneously Evaporate At Room Temperature

There are two explanations to this question.

Why does water spontaneously evaporate at room temperature.

When answering this question it s helpful to think of temperature as kinetic energy that is energy that is transferred. Its not really true that it has to be really hot for water to eveaprate. When the molecules of the liquid collide they transfer energy to each other based on how they collide with each other. The surrounding gas must not be saturated with the evaporating substance.

However as temperature rises evaporation typically increases because water molecules are moving more quickly. When a lot of water vapor is in the air molecules will get bumped up against a surface and stick to it which is why condensation forms on the outside of a cold drink on a humid day. There is not a specific temperature that water must be in order for it to evaporate. Evaporation is a type of vaporization that occurs on the surface of a liquid as it changes into the gas phase.

Sunlight really doesn t have much to do with evaporation other then heat. Olive oil in contrast has a very low vapor pressure so it s not likely to evaporate much at room temperature source. Evaporation is a surface phenomenon which is stability induced act by the liquid molecules some molecules from the surface ev. Let us make this clear evaporation isn t related to temperature boiling is.

The faster they move the more likely it is that they will break away from the pack and evaporate.