The physical process of converting liquid to gas is called ___________________.
The physical process of converting liquid to gas is called evaporation. Evaporation is a surface phenomenon that takes place below the boiling point of the liquid. Sublimation is the transition of a substance directly from the solid to the gas phase without undergoing the liquid phase. The change of a gas or vapour to a liquid by cooling is called condensation. Melting is defined as a physical process that results in the phase transition of a substance from a solid to a liquid.