The process of a liquid changing into a gas is called evaporation. This transformation occurs when molecules at the surface of a liquid gain enough energy to overcome intermolecular forces and enter the gaseous phase. Evaporation typically happens at any temperature, although it occurs more rapidly at higher temperatures due to increased molecular movement. For example, water can evaporate at room temperature, but warm water will evaporate more quickly. Evaporation is an essential part of the water cycle, contributing to processes like condensation and precipitation, and is vital for various natural and industrial applications.