| A | B |
| Thermal Energy | The total energy of particles of a substance or material. |
| Heat | Form of energy caused by the internal motion of molecules of matter. |
| Endothermic | A chemical change that absorbs heat. |
| Exothermic | A chemical change that gives off heat. |
| Conduction | Heat transfer from one substance to another by direct contact. |
| Convection | Heat transfer in liquids and gases by the movement of molecules. |
| Radiation | Heat transfer through space. |
| Calorie | The amount of heat needed to raise the temperature of 1 g of water 1 C |
| Specific Heat | The amount of heat needed to raise or lower the temperature of 1 g of a substance 1 C. |
| Thermal Expanision | The increase in size of a substance due to heat. |
| Insulator | Any substance that does not conduct heat or electricity easily. |
| Conductor | Any substance that permits the flow of heat or electricity freely. |