Chemistry
What gas makes up most of the atmosphere of Mars?
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What process changes a rock's chemical composition to break it down?
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What percentage of acetic acid is legally allowed in vinegar?
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Beryllium, magnesium, calcium, strontium, barium, and radium consist what group of elements?
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What is the symbol used on the periodic table for the element Scandium?
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What is often used in advertising signs and produces a bright reddish-orange light?
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What is the breakdown of a material by separation of the layers of which it is composed called?
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