Condensation
Condensation is the process when a liquid forms from gas or vapor. Water vapor condenses when moist is cooled below its dew point, or the temperature at which moist air becomes saturated and forms dew when it comes in contact with ground. Dew is a deposit of moisture on an exposed surface. Clouds, fog, and mist are produced by condensation.
When heat is removed from a gaseous substance, the molecules of the substance combine to become liquid. An example of this is the water vapor (gas) in the air that becomes rain (liquid).
