Chemistry

The first element on the periodic table of elements with an atomic number of 1 is?

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What symbol appears on the periodic table for Unnilquadium which has the atomic number 104?
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What symbol appears on the periodic table for the element with the atomic number 6?
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The Diels-Alder reaction is an example of which class of reactions?
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What symbol appears on the periodic table for Beryllium which has the atomic number 4?
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What are the building blocks of matter called?
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While acids dissolve most metals, what special mixture of acids is used to dissolve gold?
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What is the chemical symbol for Sodium?
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Which Middle Eastern country was widely accused of using chemical weapons in 2013?
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