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It concludeswith a brief survey of the various topics in organic chemistry and a description ofthe way that we present them in this text. 1.1 Organic Molecules All organic molecules contain carbon (C) , virtually all of them contain hydrogen(H) , and most contain oxygen (O) and/or nitrogen (N) atoms.
Note: Compounds made in the laboratory are identical in both chemical and physical. properties to those found in nature. Why organic chemistry : we can find organic compounds everywhere around us (foods, flavors, fragrances, medicines, toiletries, cosmetics, plastic, paints, our body, and etc.).