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15 Cards in this Set
- Front
- Back
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Matter |
Anything that has mass and takes up space |
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Chemistry |
The study of properties and how matter changes |
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Substance |
a substance is a single kind of matterthat is pure, meaning it always has a specific makeup—or composition—anda specific set of properties
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Physical Properties |
Hardness, Texture, Color, Melting/Freezing points |
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Chemical Properties |
Examples: will it burn React with other substance (Iron with oxygen=Rust |
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Element |
Pure substance that cannot be broken down. Examples: Gold Oxygen Carbon HYdrogen
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Atom |
An atom is the basic particlefrom which all elements are made |
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Chemical Bond |
which is a force of attractionbetween two atoms |
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Molecules |
groups oftwo or more atoms held together by chemical bonds |
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Compound |
A compound is apure substance made of two or more elements chemically combinedin a set ratio. |
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Chemical Formula |
chemical formula, which shows the elements in the compoundand the ratio of atoms |
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Mixture |
is made of two or more substances—elements, compounds, or both—that are together in the sameplace but are not chemically combined. |
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Homogeneous Mixtures |
are so evenly mixed that you can’t see the differentparts. Suppose you stir a teaspoon of sugar into aglass of water. After stirring for a little while, thesugar dissolves, and you can no longer see crystalsof sugar in the water |
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Heterogeneous Mixtures |
In a heterogeneous mixture you can see the different parts. |
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Solution |
Asolution is an example of a homogeneous mixture.A solution does not have to be a liquid, however.Air is a solution of nitrogen gas (N2) and oxygengas (O2), plus small amounts of a few other gases. |
