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Which describes a molecule? (Select all that apply.)
It can be two or more of the same elements combined together.
It can be one element by itself.
It can be two or more different elements combined.
It can be the combination of different neutrons.

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Answer:

a) It can be two or more of the same elements combined together.

A molecule is two or more atoms of the same element chemically combined.

Example is an oxygen molecule.

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