Does Heat Transfer During Phase Changes?

[gkangelexa]

This might be a question with an obvious answer, but i want to make sure.

During the phase changes from a gas to a liquid and from a liquid to a solid, the gas must give off heat, right... so the air around it gets warmer since the surroundings gain heat?

 

[Drakkith]

Yep! Cooling something down, which is simply removing heat, is how you condense or freeze things. In a freezer or refrigerator the air warms up and is continually cooled back down by the fridge.