How could plasma become a gas?

It can become a Gas, not liquid

Gas becomes a plasma when it is exposed to temperatures high enough that the electrons are stripped off.This occurs most commonly when a space craft reenters the atmosphere.

The point at which a liquid becomes a gas is the boiling point. The point at which a gas becomes a liquid is still called the boiling point. A solid going straight to gas without passing through a...

On strong heating gaseous molecules break up into nuclei and electrons they move independently, this is plasma.

first the liquid has to be heated to its boiling point (every element has a different one) then heat makes the molecules more spaced and moving around faster (heat is energy)and it becomes a gas