The removal of heat is also known (more simply) as cooling. As a gas cools, its molecules will move more slowly. At some point the attraction between molecules will overcome their decreasing momentum, drawing them together into the more compact liquid form.
evaporation
Cold (lack of heat) does. Heat causes a liquid to become a gas. Gas>Liquid>Solid.
A heated liquid will become a gas.
gas vapors
Gas
get you own personal ideas.hope i can help.--Well that person above was kinda an @$$^^Anyway My answer would be heat, causing the gas to cool down and become liquid.
Gas to liquid.
In that case, the liquid may eventually change to a gas.
The potential energy of a substance decreases when it changes into a liquid. This is because it's losing the heat energy it had when in gas form to become liquid.
The liquid may boil and become a gas.
The liquid may boil and become a gas.
It is called the Opposite of Condensation - that is Evaporation.
The states of matter all have to do with the distance between the molecules. In the gas state, the molecules are very far apart. The heat causes them to move faster, making them move further apart creating the gas state. When you remove the heat, the molecules slow down, bringing them closer together into a liquid state. If you cool them further, they will reach a solid state.