| A | B |
|---|
| physical change | change in a substance that does not change its identity |
| chemical change | change in which one or more new substances are formed |
| law of conservation of mass | the total amount of matter is neither created nor destroyed during a chemical or physical change |
| energy | the ability to do work or cause change |
| temperature | a measure of the average energy of motion |
| thermal energy | the total potential and kinetic energy of the particles in an object |
| endothermic change | energy is taken in |
| exothermic change | energy is given off |
| kinetic energy | energy due to motion |
| potential energy | stored energy resulting from position or shape of an object |
| chemical energy | a form of potential energy stored in chemical bonds |
| electromagnetic energy | energy that travels through space as waves |
| electrical energy | energy of moving electrical charges |
| electrode | a metal strip that conducts electricity |
