Chemistry
What is the sixth most abundant element on Earth, as well as the most abundant alkali metal?
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How are neutrons and protons held together in a nucleus?
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What symbol appears on the periodic table for the element with the atomic number 100?
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What is a chemical or physical agent that tends to cause cancers?
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Which of these chemicals is often used to reduce phosphates in water?
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The first element on the periodic table of elements with an atomic number of 1 is?
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Which Middle Eastern country was widely accused of using chemical weapons in 2013?
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