The term for the change of a liquid to a gas is "vaporization." This process can occur through two methods: evaporation and boiling. Evaporation happens when molecules at the surface of a liquid gain enough energy to break free, while boiling occurs when the temperature rises sufficiently for the entire liquid to turn into vapor at a specific boiling point. Vaporization is a key concept in thermodynamics and is integral to many natural processes and applications, such as the water cycle and various industrial activities. It also plays a role in cooking, cooling, and energy generation.