24.10.2013

Life on this planet is dependent on the availability of water. Scientists are always looking for evidence of water in other worlds because water is the solvent that drives life here on earth. Water exists naturally in solid, liquid and gaseous forms. It is the only substance on our planet that exists naturally in all three states of matter. A single water molecule is made up of two hydrogen atoms (H) and one oxygen atom (O). The hydrogen atoms each share a pair of election with the oxygen atom...