1Identify the importance of water and its sources.
2Identify the bonds between its atoms and water molecules.
3Identify the physical and chemical properties of water.
4Explain the abnormality of physical properties of water.
5Identify the electrolysis of water.
6Explain why water is neutral.
7Identify the water pollutants and their harms.
8Identify how to keep water from pollution.
9Appreciate the importance of water in our life.