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Matter Vocabulary

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
Popular Science sets




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