Before revision: Organic chemistry is a subdiscipline within chemistry that scientifically studies the structure, properties, and reactions of organic compounds and organic matter together with hydrocarbons and their derivatives .Clayden, J.; Greeves, N. and Warren, S. (2012) Organic Chemistry.
After revision: Organic chemistry is a subdiscipline within chemistry involving the scientific study of the structure, properties, and reactions of organic compounds and organic materials, i.e., matter in its various forms that contain carbon atoms .Clayden, J.; Greeves, N. and Warren, S. (2012) Organic Chemistry.