Front Matter 1: Introduction to Organic Chemistry- review of atoms and molecules 2: Polarity, Intermolecular Forces, and Physical Properties of Molecules 3: Representations of Organic Molecules 4: Acids and Bases 5: Alkanes and Conformations 6: Stereoisomerism 7: Introduction to Organic Reactions 8: Nucleophilic Substitution Reactions 9: Elimination Reactions 10: Properties and Reactions of Alkenes 11: Properties and Reactions of Alkynes 12: Free Radical Reactions 13: Properties and Reactions of Alcohols 14: Infrared Spectroscopy and Mass Spectrometry 15: Nuclear Magnetic Resonance Spectroscopy Back Matter Thumbnail: Ball-and-stick model of the 5α-Dihydroprogesterone molecule, a steroid hormone. (CC0; Jynto via Wikipedia )