These are carbon based molecules (or compounds) that predominant in the food we take, the fragrances we inhale, the colors we see, and many more. In present scenario, life is based on these compounds. Carbon's ability to form diverse structures and an endless number of molecules make it an important building block in the living cells and tissues. It is interesting to know how every chemical in our body is produced, moved, modified and used by a sequence of amino acids that are related to the DNA. The more we understand about how the chemistry of our body works, the better our chance of keeping everything working as it should.
It is a branch of science that deals with hydrocarbon (compound of carbon and hydrogen) and its derivatives. In these compounds, carbon is directly bonded to hydrogen (C – H). Identifying a compound as organic or inorganic is based on the structure and is determined by experimental methods but not by its formula. For better understanding, consider the following compounds.
In these, Carbonic acid alone has no C – H bond. So, it is not a hydrocarbon.Compounds with same general formula but vary in the length of carbon chain exhibit a character known as homologous series . The adjacent members of the series differ from each other by a –CH2 unit. These compounds have similar chemical properties but different physical properties.