The science which studies substance is named chemistry. It was born out of alchemy, an ancient science that studied, among other things, to find the elixir of life and make gold of iron. The primary purpose of the modern chemists is to study the reactions that are happening on the molecular level and get known more about the processes happen between various matters. That is also quite necessary to determine the laws to have the chance to create the needed substances from other ones. Chemistry, biology and physics are the sciences that have a lot of joint objectives.

Inorganic chemistry, organic chemistry analytical chemistry, physical and biological chemistry are the chapters of general definition “Chemistry”.

As the scientists had the beliefs that the organic components have the connections to the life processes the organic chemistry was named this way. But modern science has proved that not all the objects of organic chemistry are connected to the life and living objects. On the contrary, lots of inorganic elements are essential for some life organisms, for example, cooper and iron.

The matters that include carbon and hydrogen are the main objects of researches executed by organic chemistry. Thanks to it year by year the humanity get known more and more about it and that knowledge is quite helpful. Organic compounds are widely used in a variety of goods, including plastics, foods, drugs, etc.

Analytical chemistry is a subdivision of chemistry that tries to describe the laws of processes that occur in compositions of organic and inorganic substances. It defines the geometric properties of atoms that helps to realize the reactions better. It also executes the researches to determine the combination and characteristics of given components. Analytical chemistry is experimental in live nature and in this way it is similar to physical chemistry. The chemists who work in this sphere give a lot for the saving of natural resources and the safety of the environment.