is,a smallest unit of a substance atom
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An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element. ... each element is made up of identical particles of matter called atoms
Answered by
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An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element. ... each element is made up of identical particles of matter called atoms.
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