Chemistry, 25.07.2019 08:00, Lydiac8715

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. d) it can be melted and transformed into a different substance

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Why is 18-karat gold considered a mixture rather than a pure substance? a) it has a variable compos...