Answers

2016-04-16T16:44:27+05:30
Atom-
it is smallest particle of an element.
atom do not have molecule
eg-H,N
molecule-
combination of two or more atoms.
molecules have atom.
eg-h20,co2

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2016-04-16T16:49:22+05:30
ATOM:
The atom is the smallest particle in the universe.
It is further divided into many sub atomic particles.
Eg: Oxygen atom, hydrogen atom

MOLECULE:
A molecule isĀ a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
Eg: NH3, CO2

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