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What does the term “basic unit of matter” refer to?
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A, atoms. All matter is composed of atoms, including the elements. Molecules are groups of atoms linked together to form some sort of gas, liquid or solid substance. Examples: O2=oxygen gas, with two atoms of oxygen. H2O=water, liquid comprised of two atoms of hydrogen linked to an atom of oxygen. NaCl=table salt, or sodium chloride, comprised of an atom of sodium bonded with an atom of chlorine.
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