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23 Cards in this Set
- Front
- Back
Pure Substance |
Matter that always has exactly the same composition |
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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 atom |
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Compound |
A substance that is made from 2 or more simpler substances and can be broken down into those simpler substances |
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Heterogeneous Mixture |
the parts of a mix that are noticeably different from another |
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Homogeneous Mixture |
The substances are so evenly distributed that it's difficult to distinguish one substance in the mixture from another |
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Solution |
When substances dissolve and form a homogeneous mixtures |
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Suspention |
A heterogeneous mix that separates into layers overtime |
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Colloid |
Contains particles that are medium in size between the small particles in a solution and the layer particles in a suspension |
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Physical Property |
Any characteristic of a material that can be observed or measured without changing the substances in the material |
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Viscosity |
The tendency of a liquid to keep from flowing |
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Conductivity |
A materials ability to let heat flow |
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Malleability |
Ability of a solid to be hammered without shattering |
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Melting Point |
Temperatures at which a substance changes from solid to liquid |
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Boiling Point |
Temperature at which a substance boils |
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Hardness |
The ability of a material to be scratched, cut, or carved compared to another material |
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Density |
The ratio of the mass of a substance to its volume |
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Physical Change |
When some properties of a material change, but the substances in the material remain the same |
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Chemical Property |
Any ability to produce a change in the composition of matter |
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Flammability |
A materials ability to burn in the presence of oxygen |
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Reaction |
How readily a substance combines chemically with other substances |
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Chemical Change |
Occurs when a substance reacts and forms one or more new substances |
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Precipitate |
Any solid that forms and separates from a liquid mixture |