Chemistry
What is the chemical symbol for Sodium?
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What is the name for naturally-occurring alloy of gold and silver with a small amount of other metals?
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What symbol appears on the periodic table for Plutonium which has the atomic number 94?
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What are vast amounts of oil that have become trapped in one place called?
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What is used in manufacturing matches, fertilizers and pesticides, and in vulcanization of rubber?
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Gold, silver, lead, and copper exhibit the properties of which of the following crystal systems?
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How many elements with atomic number below 100 have their symbols starting with an upper case T?
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What symbol appears on the periodic table for the element with the atomic number 62?
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What are the main two elements that undergo fusion to power the sun?
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