Chemistry
What symbol appears on the periodic table for Calcium which has the atomic number 20?
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A tincture of iodine solution means that iodine is dissolved in which substance?
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What symbol appears on the periodic table for the element with the atomic number 100?
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Who is considered the "father" of organic chemistry?
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Which of the following is used as a rating scale to grade gasoline?
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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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What symbol appears on the periodic table for the element with the atomic number 18?
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