Introduction to Fundamental Concepts of Chemistry

9/24/2015 CBSE

Introduction to Fundamental Concepts of Chemistry



Atom



�It is the smallest particle of an element which can exist with all the
properties of its own element but it cannot exist in atmosphere alone.





Molecule



�When two or more than two atoms are combined with each other a molecule is
formed. It can exist freely in nature.





Formula Weight



�It is the sum of the weights of the atoms present in the formula of a substance.






Molecular Weight



�It is the sum of the atomic masses of all the atoms present in a molecule.





Chemistry



�It is a branch of science which deals with the properties, composition and the
structure of matter.



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