| A | B |
|---|
| Ionic Crystal | a crystal that is made up of two or more elements; the positive and negative ions are arranged in a definitive pattern held together by electrostatic attraction |
| Metallic Bond | a bond formed by the attraction between positively charged metal ions and the electrons around them |
| Adhesion | The intermolecular attraction between unlike molecules. |
| Surface Tension | a force that tends to pull adjacent parts of a liquid's surface together, thereby decreasing surface area to the smallest possible size. |
| Cohesion | The intermolecular attraction between like molecules. |
| Phase Change | A change from one state (solid or liquid or gas) to another without a change in chemical composition |
| Intermolecular Attraction | Attraction between molecules (compounds) |
| Melting Point | The temperature at which a substance changes from a solid to a liquid. |
| Boiling Point | The temperature at which a substance changes from a liquid to a gas. |
| Freezing Point | The temperature at which a liquid changes into a solid |
| Evaporation | The process by which molecules at the surface of a liquid absorb enough energy to change to a gas |
| Condensation | The process by which a gas changes to a liquid |
| Polar Bonds | A type of covalent bond between two atoms in which electrons are shared unequally. |
| Polar Molecule | a molecule that has a partial positive end and a partial negative end because of unequal sharing of electrons |
