A gas is a state of matter which is free in its shape, mass, and volume. Serving to be one of the four fundamental states of matter. Molecules are uncompressed and temperature is transferred throughout the area as the molecules bounce off what objects they hit.
Since a gas is at a state which is unfixed. This means molecules will freely move until enough energy has been taken away to cause condensation. But, if enough heat is applied gasses can be morphed in plasma.
When put in a room with a colder temperature than the element's condensation point, the molecules begin to deaccelerate and compress, meaning that small clumps of liquid droplets begin to form as the molecules begin to stick together or on objects