Which metal is added to gold to make it hard.
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Answer:
silver, copper, platinum, palladium, and zinc
Explanation:
Pure gold is too soft for everyday wear, so it is alloyed with a mixture of metals like silver, copper, platinum, palladium, and zinc to give it strength and durability.
The content of gold is measured in karats and not in "carats", which is used to measure the weight of diamonds.
As the K number increases, so does the gold content and price. Karats represent how many parts, by weight, of pure gold is present in the 24 parts of the alloy. Below is the range of gold content:
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