Chemistry
Which element has Na as its chemical symbol?
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Who performed the infamous gold-foil experiment that first detected the existence of the atomic nucleus?
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What process changes a rock's chemical composition to break it down?
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What are substances that control the rates of chemical reactions?
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Who is generally credited with discovering the electron?
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Which scientist was the first to discover that for DNA, "A=T and C=G"?
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What symbol appears on the periodic table for the element with the atomic number 106?
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What contain most of the calcium ion in the human body?
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