Chemistry
What is the most abundant halogen found in the Earth's crust?
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Silver chloride and silver nitrate are both chemicals that darken with exposure to what?
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Actinium on the periodic table is noted by which symbol?
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What symbol appears on the periodic table for the element with the atomic number 70?
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If nitrous oxide is added to an engine, what will the effect be?
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The salts of which of these elements are typically water soluble?
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Which scientist was the first to discover that for DNA, "A=T and C=G"?
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How are neutrons and protons held together in a nucleus?
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What is the symbol used on the periodic table for the element Lawrencium?
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