Chemistry
Which state of matter has molecules packed together tightly?
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The study of the effects of light on chemical reactions is known as what?
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What is the most common chemical element found in the Earth's atmosphere?
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What is the symbol used on the periodic table for the element Americium?
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Which chemical, also used in thermometers, was involved in early photo development?
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What symbol appears on the periodic table for Unnilquadium which has the atomic number 104?
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When wood has been heated to remove almost all volatile gases and leave the carbon, it is called what?
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When cutting onions what is released in the air that makes a person tear?
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The salts of which of these elements are typically water soluble?
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What element forms about 78% of Earth's atmosphere by volume?
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What is a compound or mixture of chemical compounds that is used to maintain a steady pH?
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Oxygen can also be created by humans by using what process, where electricity passes through water?
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