Chemistry
How many elements with atomic number below 100 have their symbols starting with an upper case T?
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Felix Hoffmann, not Bayer, first patented what remedy?
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The name for iodine comes from the Greek word "iodes", which means what color in English?
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Which of these is a chemical form of communication?
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Which type of matter has definite volume but no definite shape?
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Neptunium on the periodic table is noted by which symbol?
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What post-transition metal is used to make blue and violet light-emitting diodes (LEDs) and diode lasers?
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Nitrogen on the periodic table is noted by which symbol?
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