| A | B |
| fossil fuel | biomolecules of prehistoric plants and animals |
| potential energy | energy associated with position |
| kinetic energy | energy related to movement |
| chemical energy | released when a chemical reaction takes place |
| endothermic | a process that requires the addition of energy |
| thermal energy | heat-the energy a material possesses due to its temperature |
| exothermic | a process that involves the release of energy |
| law of the conservation of energy | energy is niether created or destroyed, it just changes form |
| specific heat capacity | the quantity of heat required to raise the temperature of 1 gram of material 1 degree celsius |
| heat of combustion | the quantity of heat given off when a certain amount of a substance is burned |
| molar heat of combustion | the quantity of energy from burning 1 mole of a substance |
| cracking | the process of converting large hydrocarbon molecules into smaller ones |
| catalyst | increases the speed of chemical reactions |
| octane rating | a number used to measure the combustion efficiency of gasoline |
| oxygenated fuels | fuels in which their molecules contain oxygen as well as carbon and hydrogen that contain |
| methanol | an oxygenated fuel used to increase the octane level of gasoline |