With two thirds of the earth's surface covered by water and the human body consisting of 75 percent of it, it is evidently clear that water is one of the prime elements responsible for life on earth. Further in the body, it regulates the activities of fluids, tissues, cells, lymph, blood and glandular secretions.
Our water must be clean befor it can be used so as to ensure safety, and to avoid unnecessary sickness. That is why chemistry helps us with a way of purifying our water. Water is made of two molecules of hydrogen and one molecule of oxygen(H2O). Rainwater is one of the purest form of natural water because it is formed as a result the condensation of water vapour in the atmosphere, all the types of natural water are in constant circulation forming a gigantic water circle. Water from rainfall, rivers or lakes is stored in reservoirs, this water is purified by various methods like;
- Coagulation
- Sedimentation
- Filtration
- Disinfection.
This posting doesn't quite fit the requirements of the assingment becos as I mentioned, you must focus on the chemistry, then other aspects such as uses, effects, production are secondary.
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