| A | B |
| Thermal Energy | the total potential and kinetic energy associated with the particles of a material |
| Heat | thermal energy that is transfered from one object to another |
| Temperature | the physical property that determines the direction in which heat energy will flow |
| Kelvin | temperature scale based upon the absolute zero concept of energy |
| Celsius | originally had zero degrees as the steam point not the ice point |
| calorie | unit of thermal energy equivalent to 4.186 joules |
| Coefficient of linear expansion | change in unit per unit length for a change in temperature of one degree |
| Water | has 4 degrees Celsius as a point of maximum density |
| Charle's Law | relates volume of a gas to its Kelvin temperature |
| Boyle's Law | relates the volume of a gas to its pressure |
| Universal Gas Constant | has a value of 8.21 x 10-2 L atm/mol K |
| Heat capacity | quantity of heat needed to raise temperature 1 degree |
| Specific heat | heat capacity per unit mass |
| Endothermic | process which absorbs heat |
| Exothermic | process which gives off heat |
| Law of Heat Exchange | states that Q lost = Q gained |
| Calorimeter | container to contain heat transfers |
| Heat of Fusion | heat needed to melt a unit mass of a material at its normal melting point |
| Heat of Vaporization | heat needed to vaporize a liquid at its normal boiling point |
| Critical point | Upper limit of the triple point |