The process in which a liquid changes into a gas is called "evaporation." Evaporation occurs when the particles of a liquid gain enough energy to overcome the forces of attraction between them and escape into the surrounding space as gas or vapor.
During evaporation, the higher-energy particles near the surface of the liquid break free from the liquid phase and become gas molecules. These molecules then mix and disperse into the air or the surrounding environment. The process of evaporation is continuous as long as there is a source of heat or energy to supply the liquid with sufficient energy.
It's important to note that evaporation specifically refers to the transformation of a liquid into a gas at temperatures below the substance's boiling point. If the liquid reaches its boiling point, it undergoes a different process known as "boiling," in which rapid vaporization occurs throughout the liquid, including the formation of bubbles.