A1.2.1 Water


Water is a chemical substance made up of hydrogen and oxygen. The chemical symbol is H2O, which means that in one water molecule, there are two hydrogen atoms and one oxygen atom.

Water is essential for all forms of life. Water is found on earth in all three physical states:

  • Solid – ice
  • Liquid – water
  • Gas – water vapour & steam


Industrial Applications:

Industrial uses of water include cleaning, cooling, steam power and food production.