Question

VERY URGENT MORE URGENT THEN ANYTHING. URGENT HELPPPPPP
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How is a pure substance different from a mixture?
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A. Mixtures can be separated by physical means.
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B. Pure substances are made up of mixtures.
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C. A pure substance is heterogeneous.
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D. A mixture is made of one substance.

Answer 1

The answer is A. Mixtures can be separated by physical means. 

Mixtures can be separated through physical means while pure substances cannot be separated through physical means. Pure substances form compounds which are chemically bonded and can be separated through chemical means.