Physical & Chemical Changes

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Ms. Wu

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6 Terms

1
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Pure Substance

A form of matter which can only be an element or compound

2
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Element

Cannot be broken down and consists of only one atom Ex: AU - only gold

3
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Compound

Made up of two or more elements and can be broken up Ex: Water - Hydrogen and Oxygen atoms

4
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Mixture

A combination of two or more pure substances that are not chemically bonded

5
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Homogeneous mixture

A mixture where the components are evenly distributed and are not visible to the naked eye. Ex: Saltwater - Dissovled so it looks like one mixture

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Heterogeneous

A mixture where you can see the two separating. Ex: Hawaiian pizza or oil and water