why are compounds pure substances even though they are made of more than one kind of particle.?
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A molecule is the smallest particle of a substance that exists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are made up of two atoms. ... A compound is a substance formed when two or more elements are chemically joined.
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A molecule is the smallestparticle of a substance thatexists independently. Molecules of most elements are made up of only one of atom of that element. Oxygen, along with nitrogen, hydrogen, and chlorine are madeup of two atoms. ... A compoundis a substance formed when two or more elements are chemically joined.
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