Chemistry
What periodic table group has some properties in common with metals and some in common with non-metals?
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Which Middle Eastern country was widely accused of using chemical weapons in 2013?
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Which mineral water company had to admit in 1990 that they artificially carbonated their product?
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Which of these can take on either a positive or negative charge, typically being a protein?
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What is the symbol used on the periodic table for the element Chlorine?
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What is a vital constituent of plant and animal life, and is the key component of hemoglobin?
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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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Which of the following is found in stinging insects?
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What alkali metal is used in batteries and certain medicines?
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