Chemistry, is a science of nature that explains how it combines to form matter with properties and other substances, and how materials interact with energy. Every material in the world composes of one substance. Therefore we meet chemistry from foods to agriculture, from cleaning materials that we use in our home to health sector in every moment of our daily life. In fact, chemistry is one of the natural sciences that helps us to define and explain our Earth. Chemistry, taking part in a positive science class, contributes to the facilitation of everyday life by making many field inspections. There are lots of sub-braches such as Organic chemistry, inorganic chemistry physical chemistry, polymer chemistry, electrochemistry and biochemistry.