| A | B |
| Physical change | change in appearance, but not subtance |
| Chemical change | changing to a new substance |
| Physical property | shape |
| Size | Physical property |
| color | Physical property |
| Physical property | mass |
| Chemical property | How a substance reacts to something |
| Atom | smallest whole bit of a substance |
| Nucleus | Center of an atom |
| Electron | Negatively charged particle |
| Proton | Positively charged particle |
| Neutron | A particle with no charge |
| Electron Cloud | Haze made by elctrons' rapid movement |