Where does condensation come from? Now, we know! It isn't magic. It isn't water leaking from inside the glass. It's the collection of water vapor from the air. When the water in the air cools down and loses energy, the particles are forced to change state, from a gas (water vapor) to a liquid (water).
When a substance, like water, changes from one state, or phase, of matter to another we say that it has undergone a change of state, or we say that it has undergone a change of phase. These changes of phase always occur with a change of heat. Heat, which is energy, either comes into the material during a change or out of the material during a change.
For example, when solid ice melts into liquid water heat is going into the solid as it melts. Although heat is being added to the ice, there will be no temperature change during the actual phase change. That will occur later.
An example of heat leaving a material is when liquid water freezes into solid ice. As heat leaves the liquid, it freezes. Again, there is no temperature change during the actual phase change.
Want to try your hand at changing the phases of water? Then, click on the link and try this cool phase changing game.
That was a great game! Mrs.Z Destiny .S
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