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2015-10-30T21:16:21+05:30

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atoms :- atoms are the smallest part of an matter that can take part in any chemical reaction and may or may exist freely.
molecules:- atoms combine together to form molecules .in other words molecule is a group of atoms.
   i hope that this will help u.....................^_^
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2015-10-30T21:16:36+05:30

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Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Atom is the smallest particle which cannot be further divided. Matter is made up of atoms. Molecules are the combination of atoms. For example, H2O(Water). It is an combination of two atoms of Hydrogen and one atom of oxygen.
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