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23 Cards in this Set
- Front
- Back
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Solid
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definite state and volume
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Liquid
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deifinite colume but indefinite shape, takes shape of its container
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Gas
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neither definite volume nor definite shape
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Plasma
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superheated gas
high-temperature physical state of matter in which atms lose most of teir electron, particles that make up atoms. (found in fluorescent light bulbs) |
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Melting
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change from sold to liquid
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Boiling
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change from liquid to gas
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Freezing
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change from liquid to solid
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Chemical Property
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relates to a substance's ability to undergo changes hat transforms i into differet substances
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Chemical change or reaction
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a change in which one or more substances are converted into different substances
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Reactants
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substaces that react in a chemical change
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Products
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substances that are formed by the chemical cahnges.
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Mixtures
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a blend of two or more diferent kinds of matter. each with its own idenity and properties an can usually be separated.
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Homogenous or solution
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uniform in composition
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Heterogenous
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not uniform throughout
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Physical poroperties- separation of mictures
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magnestism, filtration, chromatography, centrifuge, vaporization, density
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Pure Substances
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have fixed composition and is different from a mixture. 1. Every sample has exactly the same characteristic properties
2. Every sample of a given pure substance has exactly the same compostion Elements/Compounds |
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Impuriies
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present in all lab chemicals
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Endothermic
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gets colder releases/loses heat
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Exothermic
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gets warmer absorobs heat
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Evidence for a chemical change
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1. color change
2. bublling/steaming - gas is involved 3. evolution of light 4. heat 5. formation of a precipitate (solid usually) |
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Endothermic
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gets colder releases/loses heat
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Exothermic
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gets warmer absorobs heat
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Evidence for a chemical change
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1. color change
2. bublling/steaming - gas is involved 3. evolution of light 4. heat 5. formation of a precipitate (solid usually) |
