Part 1 Preparations and reactions of organic compounds: isolation of the active ingredient in an analgesic drug; acetylsalicylic acid; acetanilide; acetaminophen; isolation of caffeine; TLC analysis of analgesic drgus; ethanol from sucrose; isopentyl acetate (banana oil); preparation of a C-4 or C-5 acetate ester; methyl alicylate oil (oil of methyl oleate); preparation of soap; preparation of a detergent; N, N-diethyl-m-toluamide - the insect repellent "OFF"; gas chromatographic analysis of gasolines; isolation of essential oils from allspice, cloves, cumin, caraway, cinnamon or fennel; thin=layer chromatography for monitoring the oxidation of borneol to camphor; an oxidation-reduction scheme. (Part contents.)