| There are three significant reasons to study | | | | drinking water. All such water - borne diseases |
| chemistry. First, chemistry has an important | | | | are all but eliminated from most of the part of |
| practical application in society. The development of | | | | the world, when water supplies are treated with |
| life-saving drugs is one, and a complete list would | | | | chlorine which kill pathogenic (disease-causing) |
| touch upon most areas of modern technology. | | | | organism. Chemistry plays an important role in the |
| Second, chemistry is an intellectual enterprise, a | | | | modern world. For example food, synthetic, |
| way of explaining our material world. | | | | plastics, medecines, soap, detergents, cometics, |
| Finally, chemistry figures prominently in other | | | | fertilizers, glass and explosives are the major gift |
| fields, such as in biology, in the advancement of | | | | of chemistry. |
| medicines. Chemistry in every field as a useful | | | | The applications of chemistry are much like the |
| intellectual tool for making important decisions. | | | | science itself, undergoing constant changes. |
| The role of chemistry in the prevailing society is | | | | chemistry is an extremely practical science of |
| of enormous benefits. We are familier with many | | | | enviroment, providing our everyday needs of |
| chemicals which have become part and parcel of | | | | food, clothing and shelters. Using chemistry we |
| our daily life. | | | | have discovered pharmaceutical chemical that |
| Chlorine has become an important commercial | | | | enhance potantials of harming our health or the |
| chemical. Today chlorine has turned into the main | | | | environment. It is in our best interest as educated |
| eement of producing more then one thousand | | | | citizens and consumers to understand the |
| chlorine compounds, which are of great | | | | profound effect, both positive and negative thats |
| importance in chemical industry, producing Poly | | | | chemicals have on our lives. |
| Vinyl Chloride (PVC) as plastics for pipes. Other | | | | We use fluoride compounds such as SnF2, Na2 |
| Chlorine compound are used as bleaching agent, | | | | PO4. F(Sodium fluoro phosphate) and NaF in our |
| disinfectants, solvents, pesticides, refrigerants, | | | | tooth pastes to protect and control tooth decay. |
| flame retardant and drugs. | | | | It is a great beneficence of chemistry on the |
| Cholera, typhoid fever and dysentery are | | | | society. |
| dengerous diseases, transmitted through impure | | | | |