Why is 18-karat gold considered a mixture rather than a pure substance? A) It has a variable composition. B) Its color is different than pure gold. C) The gold atoms are not arranged in a repeating pattern.

asked Jan 8, 2019 132k views

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The answer is A because It has a variable composition. 18-karat gold is not made up of just gold atoms.

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A. it has variable composition

Colin Alworth answered Jan 12, 2019

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