| A | B |
|---|
| Atom | The smallest particle that has all the properties of an element. |
| Chamical change | A change by which a substance becomes a different substance. |
| Compound | A pure substance that is made up of two or more different elements. |
| Conduction | A method by which heat energy travels by direct contact. |
| Convection | A method by which heat energy rises or travels by the movement of flowing gases or liquids. |
| Electrons | Particles that flow through wires in the form of electricity. |
| Elements | A substance that is made up of a single type of atom. |
| Energy | A force that makes a substance's particles move. |
| Mixture | Two or more substances that are put together and that can easily be taken apart. |
| Molucule | The smallest particle of a substance that can exist and still retain its properties. |
| Oxidize | To combine a substance with oxygen in a chemical change. |
| Physical change | A change in which a substance changes its state but not what it is made of. |
| Radiation | 1. Method by which heat energy travels by waves. 2. Particles and energy given off by nuclear reactions. |
| Solute | The substance in a solution that is dissolved by the solvent. |
| Solution | A mixture in which one substance is dissolved in another substance. |
| Solvent | The substance in a solution that dissolves a solute. |
