| A | B |
| Condensation | Changing from a gas to liquid |
| Evaporation | Changing from liquid to gas on the surface |
| Types of Vaporization | Evaporation and Boiling |
| Boiling | Changing from a liquid to a gas with molecules leaving throughout the liquid |
| Sublimation | Solid changing directly to gas |
| Freezing | Liquid changing to solid |
| Melting | Solid changing to liquid |
| Boiling Point | temperature when a substance changes from a liquid to gas |
| Melting Point | temperature where a substance changes from a solid to liquid |
| Temperature | Measure of the energy of molecules |
| Phase changes when energy is added | Melting, Boiling, Evaporation, Sublimation |
| Phase changes when energy is taken away | Freezing, Condensation, Deposition |
| Water | Substance that expands when changing to a solid |
| Thermal Energy | Heat |
| Deposition | Gas changes directly to a Solid |
| Examples of Deposition | Frost, snowflakes |
| Example of Sublimation | Dry Ice |
| Example of Condensation | Moisture on the Outside of a Cold Glass |
| Example of Melting | Ice Cream on a Hot Day |
| Materials/conditions needed to make a cloud | Water Molecules, Cold Temperatures, Dust/Dirt |
| Absolute Zero | temperature when molecules stop moving |
| Expand | Molecules move farther apart, but do not get bigger |
| Contract | Molecules move closer together, but do not get smaller |
| Temperature | Measure of the energy (movement) of molecules |
| Gas | has a changing shape and volume |
| Liquid | Has a changing shape and definite volume |
| Solid | Has a definite shape and volume |
| Solids, Liquids and Gases | Substances that expand and contract |
| 0 degrees Celsius, 32 degrees Fahrenheit | Melting point of water |
| 100 degrees Celsiums, 212 degrees Fahrenheit | Boiling point of water |
| Have high melting points | Solids at room temperature |
| Have low boiling points | Gases at room temperature |
| All stubstances can be solid, liquid or gas. The phase depends on the __________. | temperature |