Chemistry
What alloy is made of copper and zinc and used for decoration for its bright gold-like appearance?
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What isotope of carbon can be used to figure out how old some objects are or when something died?
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What is the second most common metal on Earth, and the most widely-used metal?
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The most common commercial use of magnesium metal is as an alloying agent with what other element?
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What is the most abundant element in the known universe?
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The Air-Quality Index measures exposure in the air at ground-level to which chemical?
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What is a combination of substances that still remain intact?
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What is the most commonly encountered form of silver?
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