It could be part of a process called distillation.
A change of state from a gas to a liquid is called condensation.
The change in physical state from a gas to a liquid is called condensation.
The change of state from a liquid to a gas is a physical change called vaporization.
The phase change that occurs when a gas turns into a liquid is called condensation.
A change of phase, from solid to liquid, or liquid to gas, or gas to liquid, etc., is also sometimes called a change of state.
The state change from liquid to gas is called evaporation.
The change of state of matter from a gas to a liquid is called condensation.
To change a gas to a liquid, you condense it.
The change from a liquid to a gas is called vaporization.
The transition from a gas to liquid is called condensation
When there is a change from a gas to a liquid, the process is called condensation.
The change from liquid to gas at the surface of a liquid is known as vaporization.