Pure Substances & Mixtures

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A pure substance that cannot be broken down into other substances by chemical or physical means.

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element

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This diagram represents a _____. Options: pure substance that is a compound, mixture of elements, pure substance that is an element, mixture of compounds

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pure substance that is a compound

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Can a mixture be separated?

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Yes

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The basic unit of matter is

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an atom

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A substance that contains only one type of atom is a(n)

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element

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This picture represents which of the following? Options: Element, Compound, Mixture

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Mixture

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What is a pure substance?

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An element or a compound.

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NaHCO₃ is an example of —

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a compound

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Substances formed from atoms of two or more elements are called

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compounds

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Describe this sample: Pure element, Pure compound, Mixture of elements, Mixture of compounds

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Mixture of elements