Elements, Compounds, and Mixtures

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Element

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Pure substance, one type of atom

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Compound

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Substance with two or more elements chemically combined

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Mixture

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Combination of two or more substances not chemically combined

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Example of Element

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Oxygen (O)

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Example of Compound

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Water (H₂O)

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Example of Mixture

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Sand and salt

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Characteristics of Elements

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Cannot be broken down into simpler substances

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Characteristics of Compounds

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Fixed ratio of elements, new properties

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Characteristics of Mixtures

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Comparison: Element vs Compound

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