water

Pakistan
May 23, 2008 1:40pm CST
water is an extra ordnery compund it is subsestance that occurs free in nature in three phases solid, liquid and wapers, it is a universal solvent our earth is one third part of water,its camically written as H2o. further it is divided into two parts , sofr and hard water. hard water contains calcium carbronate and its removes when we boil the weater about two hours....
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