| A | B |
| Capillary Action | A liquid is attracted to the surface of a container. |
| Evaporation | Particles escape from the surface of a non- boiling liquid to form a gas. |
| Fluid | A substance that flows and takes the shape of the container. |
| Freezing | Removing heat from a liquid to make it solid. |
| Surface tension | Holds molecules together, decreasing area to the smallest size. |
| Vaporization | Physical change of a solid or liquid to a gas. |
| Amorphous solid | Particles are arranged randomly in a solid. |
| Crystal | Particles are arranged in a geometric pattern. |
| Crystal structure | Particles in a three dimensional arrangement. |
| Crystalline solid | Solid that contains crystals. |
| Melting | Changing a solid to a liquid while heating. |
| Melting point | The temperature that a solid will become a liquid. |
| Supercooled liquid | Substance that looks like a solid, but has properties of a liquid. |
| Unit cell | Smallest part of a crystal structure. |
| Boiling | Changing a liquid to a gas. |
| Boiling point | The temperature that a liquid will become a gas. |
| Condensation | Changing a gas to a liquid. |
| Deposition | Changing a gas to a solid. |
| Equilibrium | Changes occur at the same rate. |
| Equilibrium vapor pressure | Pressure of a vapor in relationship to its liquid. |
| Freezing point | The temperature that a liquid becomes a solid. |
| Le Chatelier's principle | Stress placed on an equilibrium system and a new one is created. |
| Sublimation | Changing a solid to a gas. |
| Volatile liquid | Liquids that evaporate. |