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9. Which statements about mixtures is FALSE? Select ALL that apply.
they are all mixed uniformly and have an even composition throughout
the components keep their physical properties
substances must combine in specific proportions
mixtures can be separted using physical properties.

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Answer:

they are all mixed uniformly and have an even composition throughout, substances must combine in specific proportions

Explanation:

-only homogenous mixtures are uniformly mixed

-mixtures comprise of 2 of more substances mixed in any proportion.

-mixtures have the same properties as their constituent elements

-mixtures are separated by physical processes

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