The manual is both a guide and a guide to chemistry. For each topic, the necessary theoretical material, detailed solutions to the main standard problems, as well as modern exam questions and problems with answers are given. The range of complexity of tasks is very wide - from standard questions for triples, to super-complex tasks for medalists. The manual is intended for applicants preparing for admission to the university, for senior schoolchildren and teachers of chemistry . For each section - theoretical part, questions and tasks (for which there are only short answers at the end of the book) . A total of more than 1300 questions from the examination practice. At the end there is a section with solutions - Basic methods of solving problems. Dop. Information: Contents:IntroductionA to A1. THEORETICAL BASES OF CHEMICAL1. Chemistry . Essential concepts and laws of chemistry 52. Structure of the atom . Electron configurations of atoms. Atomic nucleus . Periodic law and periodic system of elements D. and . Mendeleev 193. Structure of molecules . Chemical bond. Valence of elements 414. Aggregate states of substance 695. Patterns of chemical reactions (thermal effect of reactions, reaction rate, chemical equilibrium) 846. Solutions. Electrolytic dissociation . Hydrolysis of salts 1057. Classification of chemical reactions . Oxidation-reduction processes. Electrolysis 132G l in a II. INORGANIC CHEMISTRY8. Nomenclature, classification of inorganic substances . Properties and methods of obtaining 1629. Hydrogen. Halogens and their compounds 17710. Oxygen subgroup 19111. Nitrogen subgroup 20512. Carbon subgroup 22413. Properties of s-elements (alkaline and alkaline earth metals) and their compounds 23714. Aluminum is a typical p-metal 24615. Main transition metals (d-elements) and their compounds 25316. Tasks for repetition in inorganic chemistry 273G l in a III. ORGANIC CHEMICALS17 . Basic concepts and patterns in organic chemistry . Subject Organic Chemistry 27618. Limit (saturated) hydrocarbons 29519. Alkenes . Diene hydrocarbons 30720. Alkins 32221. Aromatic hydrocarbons (Arenas) 33322. Alcohols and Phenols 35023. Carbonyl compounds - aldehydes and ketones 36924. Carboxylic acid. Complicated Ethers. Fats 38125. Carbohydrates 40426. Amina . Amino acids. Protein 41727. Heterocyclic compounds 43728. Problems for repetition in organic chemistry 449G l in a IV. MAJOR SOLUTIONS CHALLENGESChemistry program for admission to universities 499. Answers 506. Recommended Literature 524