Chemistry

Which of these is an element?

More Questions from Chemistry
What symbol appears on the periodic table for Thorium which has the atomic number 90?
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What is the diffusion of water through a cell membrane called?
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Praseodymium on the periodic table is noted by which symbol?
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A compound or molecule that is composed of carbon, oxygen and hydrogen best fits which science term?
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What is thermal energy that moves from warmer objects to cooler ones called?
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Which of these would be used to measure the volume of liquid in a glass?
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What transition metal's symbol comes from the Latin word "hydrargyrum" meaning "liquid silver"?
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Who performed the infamous gold-foil experiment that first detected the existence of the atomic nucleus?
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