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Matter Vocabulary
| Term | Definition |
|---|---|
| solid | Closely packed molecules, has its own shape |
| liquid | Molecules that flow to take the shape of its container |
| gas | Molecules expand to fill a container, molecules spread out |
| mixture | When two or more substances combine |
| solution | When a solid is mixed into a liquid and disappears, it looks the same throughout |
| chemical change | A change results in…. Heat, light, smoke, fizzing, color change, or smell Is not reversible |
| examples of chemical change | Rusting, burning something, cooking, spoiled food |
| physical change | When a change in state happens, (melting, freezing, etc.) Mixing, but the item is still the same substance, reversible |
| examples of physical change | Cutting string, crumpling paper, melting ice, evaporating water |
| conduction | Transfer of heat through touch/direct contact |
| convection | Transfer of heat through a liquid or a gas by rising and falling particles |
| radiation | Transfer of heat through empty space, heat transfer from a distance |
| conductors | Materials that easily transfer heat, Metals |
| insulators | Slow the transfer of heat. Plastics, wood, cork, cloth |
| transpiration | Heat causes plants to release water vapor into the air |
| condensation | Warm water vapor cooling down and forming into a liquid (clouds form) |
| evaporation | The sun heats bodies of water, making the water turn to water vapor (gas) |
| precipitation | Water falling to the Earth-rain, ice, hail, or dew |
| convection current | A cycle of warm air rising and cold air flowing in to replace it (creates wind) |
Created by:
elizabethkey
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