Chemistry is the science concerned with the composition, behavior, structure, and properties of matter, as well as the changes it undergoes during chemical reactions. It is a physical science for studies of various atoms, molecules, crystals and other aggregates of matter whether in isolation or combination, which incorporates the concepts of energy and entropy in relation to the spontaneity of chemical processes. Modern chemistry evolved out of alchemy following the chemical revolution (1773).
Disciplines within chemistry are traditionally grouped by the type of matter being studied or the kind of study. These include inorganic chemistry, the study of inorganic matter; organic chemistry, the study of organic matter; biochemistry, the study of substances found in biological organisms; physical chemistry, the energy related studies of chemical systems at macro, molecular and sub molecular scales; analytical chemistry, the analysis of material samples to gain an understanding of their chemical composition and structure. Many more specialized disciplines have emerged in recent years, e.g. neurochemistry the chemical study of the nervous system (see sub disciplines).
A chemist can work in the pharmaceutical, oil, and many others, besides to lecture to training for a degree.
In Brazil, there are many reputable universities in the chemical sector. At USP (University of sao paulo) it is possible to graduate degree in chemistry and / or degree. Other universities offering the course is UNICAMP, UNESP, and others.
In this century extremely concerned about the environmental, chemical and biological make a lot of space in the labor market, so it's an interesting choice, in addition to its scientific contribution, there is also a social issue, which is what most scientists seek.