Chemistry
What halogen element exists as a liquid at room temperature?
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What is the most commonly used material in the manufacturing of semiconductors?
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What symbol appears on the periodic table for Thorium which has the atomic number 90?
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Compounds of what element are used in soaps, fertilizers, explosives, and matches?
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Which would NOT be used for the polymerization of ethylene?
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What polyethylene bowls made Earl Tupper a millionaire?
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What is the unit defined as the energy needed to raise one gram of water by 1 degree Celsius?
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What term is used for military use of harmful biological agents?
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