Carbon atoms have the ability to link together and form molecules made up of many carbon atoms The branch of chemistry that is the study of carbon-containing compounds is known as organic chemistry(有机化学) 13 million known organic compounds and 100,000 new ones are added annually Only 200,000-300,000 known inorganic compounds• Carbon atoms have the ability to link together and form molecules made up of many carbon atoms. • The branch of chemistry that is the study of carbon-containing compounds is known as organic chemistry (有机化学). • 13 million known organic compounds and 100,000 new ones are added annually. • Only 200,000-300,000 known inorganic compounds