Answers

2014-11-25T22:06:07+05:30
Hydrogen and oxygen are considered elements whereas water is not considered an element because water is compound H2O which is formed with 2atoms of hydrogen and 1atom of  oxygen Hope you like it:) 
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2014-11-25T22:08:47+05:30
Hydrogen and oxygen are made up of same kind of atom hence it is considered as elements whereas water is made by the combination of different kinds of atoms  hence it is called as a compound...
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