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What are atoms,molecules,elements ,ions and componds

Asked by Bachittar Singh 6th October 2013, 2:10 PM
Answered by Expert
An atom is  the smallest particle of an element that can take part in a chemical reaction;however, it may or may not exist independently.
A molecule is the smallest particle of an element or a compound that can exist by itself; it never breaks up except for taking part in a chemical reaction.
An element is a pure substance which cannot be  converted or broken down into two or more simpler substances by any physical or chemical process.
An ion is a charged particle which is formed due to the gain or the loss of one or more electrons by an atom.
A compound is a pure substance, composed of two or more elements combined chemically in a fixed proportion.
Answered by Expert 8th October 2013, 9:06 AM
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