| A | B |
| energy | The ability to cause a change. |
| kinetic energy | The energy an object has due to its motion. |
| potential energy | Energy that is stored because of an object's position. |
| law of conservation of energy | States that energy cannot be created or destroyed. |
| temperature | Measure of the average kinetic energy of the particles in an object. |
| conduction | Transfer of energy by collisions between atoms and molecules in a material. |
| convection | Transfers heat when particles move between objects or areas that differ in temperature. |
| radiation | Transfer of energy by waves. |
| heat | A transfer of energy from one object to another due to a difference in temperature. |
| endothermic reaction | A chemical reaction that absorbs heat energy. |
| exothermic reactions | Chemical reactions that release heat energy. |
| catalyst | A substance that changes the rate of a chemical reaction without any permanent change to its own structure. |