Organic chemistry is a branch of chemistry that studies the structure, properties, composition, reactions, and synthesis of organic compounds, which contain carbon atoms. This field is fundamental to understanding the molecular basis of life, as it encompasses a wide range of substances, including natural products, pharmaceuticals, plastics, and fuels. Organic chemistry explores the unique ability of carbon to form stable covalent bonds with other elements, particularly hydrogen, oxygen, nitrogen, and other carbon atoms. This versatility leads to a vast array of molecular structures, from simple molecules like methane to complex macromolecules like DNA and proteins, driving innovation in medicine, materials science, and environmental sustainability.