| A | B |
|---|
| Energy | abilty to cause change |
| Kinetic energy | energy in motion |
| Potential energy | energy that is stored |
| Law of conservation of energy | energy cannot be created or destroyed |
| Temperature | the average kinetic energy |
| Thermal energy | heat energy lost during transformations |
| Heat | energy transfer due to a difference in temperature |
| Radiation | energy that travels by waves |
| Conduction | transfer of thermal energy from particle to particle through collisions |
| Convection | transfer of thermal energy that happens when particles move from one place to another |
| Chemical energy | energy stored within chemical bonds |
| Fahrenheit | temperature scale used mainly in the US |
| Celsius | metric temperature scale |
| catalyst | a substance that changes the rate of a chemical reaction without being changed itself |
| exothermic reaction | chemical reaction in which energy is given off |
| endothermic reaction | chemical reaction in which energy is absorbed |
| photosynthesis | most important endothermic reaction |
| James Joule | demonstrated the Law of Conservation of Energy in 1840 |
