Composition of Water

Composition

Three fourths of our planet earth is filled with water. Water exists in three states namely solid, liquid and gas. Water on the surface of the earth is found mainly in oceans (97.25%), polar ice caps and glaciers (2. 05%) and the remaining is in lakes, rivers and aquifers - ground water. Even our body is made up of water (65%) but it is not apparent. Water is a chemically stable compound. Its chemical name is dihydrogen monoxide (H₂O). It can be broken up into hydrogen (H₂) and oxygen (O₂) when an electrical current is passed through it. The process of breaking down of water molecules by the passage of electric current is known as electrolysis of water.