Chemistry
What kind of crystalline solid is a grain of sand?
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Gold, silver, lead, and copper exhibit the properties of which of the following crystal systems?
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What element forms a brilliant mirror when it is painted on glass?
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When cutting onions what is released in the air that makes a person tear?
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What property is a measurement of how hot or cold something is?
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What is a chemical or physical agent that tends to cause cancers?
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What term is used for military use of harmful biological agents?
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How many elements in the actinide series are not radioactive?
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