| A | B |
| physical change | change in size, shape or state of matter |
| chemical change | change in matter that produces a new matter |
| product | newly formed matter in a chemical change |
| energy | ability to cause change |
| heat | flow of thermal energy from warmer to cooler areas |
| temperature | measure of how hot/cold something is |
| mixture | matter that is made of 2 or more substances physically combined |
| solution | mixture in which one kind of particle is mixed evenly with another |
| dissolve | to mix completely with another to form a solution |
| reactant | the matter you start with in a change |