| A | B |
| Absorb | To take in |
| Atom | The smallest whole bit of matter |
| Chemical Change | A change that forms new substances with new properties |
| Chemical Property | A property that describes how a substances reacts with another substance |
| Compound | A substance formed when atoms of two or more different elements join together |
| Concentrated | Containing a large amount of solute |
| Conductor | A material that transmits heat or electricity |
| Cast | A fossil formed by sediments filling a mold |