The publication contains theoretical sections of the course "Quantum Physics and Quantum Mechanics," including the basics of the theory of thermal radiation, the atomic structure of matter, wave theory, the operator method of quantum mechanics, the physics of atoms and molecules. Each chapter presents sample calculations, self-solving problems, and test questions covering all didactic units of the theoretical course. The textbook is intended for university students studying in areas of training included in the UGSN: "Chemistry," "Chemical Technologies," may be of interest to masters, graduate students and university teachers.