Chemistry
What is the half-life of Potassium 40 as it decays to Argon?
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What is the symbol used on the periodic table for the element Fluorine?
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What is another name for synthetic gas made from coal?
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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 two common ingredients cause an observable chemical reaction when mixed?
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Analysis of the black soot left over from a fire would reveal what primary element?
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