Understanding exothermic and endothermic phase changes is really interesting!

• Exothermic: This happens when a substance gives off heat. For instance, when water turns into ice, it actually warms the air around it.

• Endothermic: In this case, a substance takes in heat. For example, melting ice needs heat from its surroundings to turn into water.

These changes help us see how energy moves when materials change from one form to another!