24-karat gold is considered to be pure gold. 18-karat gold is considered to be about 75% gold. What is 18-karat gold considered a mixture rather than a pure substance?
A) It has a variable composition of other elements and minerals.
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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Option a is the correct one
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Answer:
the correct answer is: A
Explanation:
this question was on USA Test Prep
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