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23 Cards in this Set
- Front
- Back
Pure Substance |
Matter that always has exactly the same composition; and element or compound. |
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Element |
A substance that cannot be broken down into simpler substances. |
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Atom |
The smallest particle of an element.
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Compound |
A substance that is made from two or more simpler substances and can be broken down into those simpler substances. |
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Heterogeneous Mixture |
A type of mixture in which the parts of the mixture are noticeably different from one another. |
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Homogeneous Mixture |
A type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another. |
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Solution |
A mixture that forms when substances dissolve and form a homogenous mixture. |
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Suspension |
A heterogeneous mixture that separates into layers over time. |
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Colliod |
A mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension. |
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Physical Property |
Any characteristic of a material that can be observed or measured without changing the composition of the substances in the material. |
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Viscoity |
The tendency of a liquid to keep from flowing; resistance to flowing. |
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Conductivity |
A material's ability to allow heat or electric charges to flow. |
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Malleability |
The ability of a solid to be hammered without shattering. |
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Melting Point |
Is the temperature at which a substance changes from solid to liquid.
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Boiling Point |
Is the temp. at which a substance boils. |
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Hardness |
Is the ability of a material to be streched,cat,or carved by or do same for another material. |
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Density |
Is the route of the mass of a substance to its volume. |
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Physical Change |
Occurs when some of the properities of a material change, but the substance in the material remain the same. |
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Chemical Property |
Is any ability to produce a change in the comp. of matter. |
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Flammability |
Materials ability to burn in the presence of oxygen. |
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Reactivity |
Is the property that describes how reality a substance combines chemically with other substances. |
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Chemical Change |
Occur when a substance reacts and forms one or more new substances. |
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Precipitate |
Is any solid that forms and separates from a liquid mixture. |