| A | B |
| Physical change | Any change which does NOT create a new substance |
| Chemical change | Any change which creates a new substance |
| Physical property | Any property which can be observed without going through a chemical change |
| Chemical property | Any property which can only be observed by making a chemicl change |
| Conductor | A substance which conducts electricity well |
| Insulator | A substance which does not conduct electricity well |
| Electrolyte | A substance which conducts electricity if dissolved in water |
| Non-electrolyte | A substance which does NOT conduct electricity if dissolved in water |
| Conductivity | A substance's ability to conduct electricity |
| Conservation of mass | The total mass does NOT change during a physical or chemical change |