Chemistry
A critical component of vitamin B-12, what element is the only metal found in vitamins?
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What is the most abundant element in the known universe?
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When wood has been heated to remove almost all volatile gases and leave the carbon, it is called what?
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What element does hydrogen combine with to make the compound water?
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What word is used to describe crops and foodstuffs grown without chemicals?
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The salts of which of these elements are typically water soluble?
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The dumping of most toxic chemicals into the ocean was banned by what treaty?
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On which scale is the boiling point of water 80 degrees?
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Carbon Dioxide, often given off in a fire, is comprised of what?
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