Chemistry is a branch of science in which we study about the composition, structure and properties of matter and the changes which matter undergoes by the interaction of its various forms. A chemist is concerned with anything that occupies space and has mass, inertia and weight. The science of chemistry has become so vast that it has been divided into several principal branches. Analytical chemistry is concerned with the qualitative and quantitative analysis of different substances.
Organic chemistry is the branch which deals with the study of the compunds of carbon.
Inorganic chemistry is concerned with the chemistry of elements, other than carbon, and their compounds. In physical chemistry we study about the structure of matter and the various principles which explain the transformations of one form of matter into another. Apart from these main branches, there are other branches like biochemistry , industrial chemistry , medicinal chemistry , agricultural chemistry, food chemistry , etc. An understanding of chemistry is necessary in many professions like medicine, geology, physics, biology, pharmacy, engineering, and agriculture. Chemistry equations provide a powerful symbolic notation to express qualitative and quantitative details of chemical transformations i.e chemical change.