This typically occurs when water vapor molecules come.

Is converting frost to water vapor endothermic or exothermic. Condensation is the process by which water vapor turns into liquid water. Here is how you would classify the phase changes as endothermic or exothermic: An endothermic process absorbs heat and cools the surroundings.

Exothermic and endothermic reactions both cause some type of energy level differences. The molar heat of condensation is the heat evolved when one mole of vapor is condensed. Therefore, boiling water is an endothermic process.

Thus dissolution of a gas in water is an exothermic process. Melting, evaporation and sublimation are endothermic processes while freezing, condensation. Examples of this would be melting ice cubes, conversion of frost to water vapor, and baking bread.

The applied heat helps break the intermolecular bonds between the water molecules, which spreads in the molecules further. An exothermic reaction gives off heat energy.