What is an organic compound?
An organic compound (made up of one or more atoms of different types) always contains carbon and other elements such as hydrogen, oxygen, nitrogen, and sulfur. If the compound contains a metal or a nonmetal such as Se, then the compound is generally regarded as an organometallic compound. Methane (CH4) is considered an organic compound but carbon dioxide (CO2) is not. Thus, organic compounds usually contain hydrogen as well as carbon. Organic chemistry is the study of the chemistry of carbon (or organic compounds as we have defined them).