| A | B |
| CARBON | Organic compounds contain this element. |
| SALT | A compound formed when an acid reacts with a base |
| pH | The measure of H+ ions in a solution |
| LESS THAN 7 | pH level of acids |
| 7 | pH level of distilled water (neutral pH) |
| over 7 to 14 | pH level of bases |
| HYDROGEN IONS (H+) | The pH of a solution is the measure of this |
| HYDROXIDE IONS (OH-) | A base releases this into a solution |
| MATTER | Anything that has mass and occupies space |
| ELEMENT | A substance in which the atoms are alike but different from the atoms of other elements |
| COMPOUND | A substance that consists of two or more elements that are chemically combined |
| MIXTURE | Consists of two or more substances that are not chemically combined |
| ACIDS | When these dissolve in water, hydrogen ions (H+) are released |
| BASES | A substance that releases hydroxide ions (OH-) into a solution |
| PHYSICAL PROPERTIES | Shape, density, solubility, odor, melting point, boiling point, and color |
| CHEMICAL PROPERTIES | Acidity, basicity, combustibility, reactivity |