Chemistry

Which of these is an element?

More Questions from Chemistry
What process changes a rock's chemical composition to break it down?
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What symbol appears on the periodic table for the element with the atomic number 106?
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What name is given to water in the gaseous state?
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Which of these is an odorless and colorless gas?
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On a prescription, what does "QOD" stand for?
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What compounds that are soluble in water are classed as bases?
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How are neutrons and protons held together in a nucleus?
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A unit of measure of absorbed radiation is known as what?
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