what is means by molecules
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Explanation:
the smallest unit into which a substance can be divided without changing its chemical nature
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A molecule is a particle made up of two or more atoms that are chemically bonded together; the number of atomic nuclei making up a molecule is a determinate number. For example, HCl(g) is a molecule made of one hydrogen atom bonded to one chlorine atom. It is made of two atoms and is called a diatomic molecule.
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