Chemistry

Which element has the lightest atomic weight?

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What process causes molecules to move into areas that have fewer molecules?
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What symbol appears on the periodic table for Unnilquadium which has the atomic number 104?
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Which of these is a state of matter?
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What is the symbol used on the periodic table for the element Scandium?
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What contain most of the calcium ion in the human body?
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What is the symbol used on the periodic table for the element Americium?
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Berkelium on the periodic table is noted by which symbol?
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What is the boiling point of water on the Celsius scale?
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