| A | B |
| Matter | Anything that has mass and occupies space. |
| Solid | A state of matter that has a definite volume and a definite shape. |
| Liquid | A state of matter that has no definite shape but has a definite volume. |
| Gas | A state of matter with no definite shape or volume. |
| Physical Change | A change that alters the form of a substance but not its identity. |
| Chemical Change | A change that alters both the form and identity of the substance. |
| Pure Substance | Made of only one kind of matter and has definte properties. |
| Mixture | Two or more substances that are mixed together but not chemically combined. |
| Solute | The substance being dissolved in a mixture. |
| Compound | A substance made of two or more different elements chemically combined. |
| Element | A substance that cannot be broken down into other substances by chemical or physical means. |
| Atom | The most basic, single, unit of matter |
| Molecule | Two or more atoms, of the same kind, held together by chemical bonds. |
| Viscosity | The resistance of a liquid to flow. |
| Solution | An evenly distributed mixture of one solute in a solvent. |
| Suspension | A not evenly distributed mixture with multiple solutes in a solvent. |
| Solubility | How well a solute can dissolve in a solvent |
| Solvent | The substance doing the dissolving of a solute in a mixture. |