| A | B |
|---|
| Freezing | Liquid to solid / exothermic |
| Melting | Liquid to solid / endothermic |
| Evaporation | Liquid to gas / endothermic |
| Endothermic change | Heat is released |
| Exothermic change | Heat is absorbed |
| Heat sink | Cooler temp area in a system |
| Heat source | Higher temp area in a system |
| Radiation | Uses EM waves / no medium necessary |
| Conduction | Direct contact w/ a solid |
| Convection | In liquid / gas using mass movement |
| Physical Change | Change in state / form |
| Chemical Change | Changes ID of a substance |
| Condensation | Gas to liquid / exothermic |
