Chemistry

Which of these is an element?

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How many structural isomers does propane have?
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If you crush a diamond, what color is the dust?
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Approximately how many chemicals are in a cup of coffee?
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Dr Pepper shares what main ingredient of most antifreezes?
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Scotch tape and plastic wrap are made from what?
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Which of the following metals is not known to start fires in the presence of water?
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Which type of matter has definite volume but no definite shape?
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