Science Book K Chapt 1 Set 1
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Created by:
scarvel on December 4, 2008
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SRC Middle School Resource Room
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16 terms
Terms | Definitions |
|---|---|
 matter | anything that has mass and occupies space |
| chemistry | the study of the properties of matter and how matter changes |
| substance | a single kind of matter that is pure and has a specific set of properties |
| physical property | a characteristic of a pure substance that can be observed without changing it into another substance |
| chemical property | a characteristic of a pure substance that describes its ability to change into a different substance |
| element | a pure substance that cannot be broken down into other substances by chemical or physical means |
| atom | the basic particle which all elements are made |
| chemical bond | the force that holds two atoms together |
| molecule | particle made of two or more atoms bonded together |
| compound | pure substance made of two or more elements chemically combined |
| chemical formula | a formula that gives the elements in a compound and the ratio of atoms |
| mixture | two or more substances that are mixed together but not chemically combined |
| heterogeneous mixture | a mixture in which pure substances are unevenly distributed throughout the mixture |
| homogeneous mixture | a mixture in which substances are evenly distributed throughout the mixture |
| solution | an example of a homogeneous mixture, forms when substances dissolve |
| mass | a measure of how much matter is in an object |
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