WHAT IS WATER?

1. It is a chemical substance with the formula H₂O (2 hydrogen and 1 oxygen atoms),
2. It exists in three states; solid (ice), liquid (water) and gas (water vapour),
3. It is a colourless, transparent, odorless, tasteless liquid that forms seas, lakes, rivers, and  rain, 
4. It is essential to all living things,
5. It is the most abundant liquid on earth (covers 70% of earth's surface),
6. It makes up 57%-70% of human body weight.