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Which of the following is true of chemical elements?
They are pure substances consisting of one type of atom.
They are made up of different molecules.
They are divided into metals and metalloids.
They cannot combine to form new compounds.
Detailed Explanation
Chemical elements are substances containing only atoms of a single type. The element Carbon, for example, only contains Carbon atoms. Molecules are compounds of the same or different elements. Chemical elements include metals, metalloids, and nonmetals.
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