Sciences. They follow us in every aspect of our life. Drugs? Chemistry. Computers? Mathematics. Electricity? Electrical engineering. Earth? Geology. Society? Psychology. Without sciences, the lives of all people would be much more difficult and different. However, many argue that some sciences have harmed man and the earth. For example, through the development of mobile technology people become more alienated, while the environmental disasters from chemical wastes are many. In the following essay we will focus on chemistry and its benefits. First of all, drugs, is probably the most advantageous use of chemistry for man. It has benefited in a great extent the welfare, for example, we can remind medieval times where life expectancy was almost thirty to thirty five years. With the development of drug chemistry life expectancy now super passes seventy years in the developed countries. Next we have green chemistry. Researches have shown that its application in the field of drugs and not only has many benefits, since the savings of energy during the production process reaches the percentage of 50%. The yield of the products increases by 40%, while the wastes of factories decreased up to two hundred thousand cubic meters in a period of thirteen years. One of the most recent applications of chemistry is the invention of the self-curing concrete, which gives a new dimension to the material and the construction of buildings. In conclusion, chemistry has contributed in the improvement of people's life quality. It has applications in all dimension of our life, from food production to construction works, so if it is used for good purposes only then its further development will be everyone's wish.