This book presents in detail the sections "Oxidation-Reduction", "Thermochemistry", "Chemical Kinetics", and "Chemical Equilibrium" of Chemistry B' High School, Group of Orientation of Positive Studies. The structure of the textbook is faithfully followed.

It contains:
- Analytical theory for a complete understanding of the subject matter.
- Theory questions with the correct answer, which cover the "difficult points" of the 2nd topic of the National Examinations.
- Multiple-choice questions with justification for the theory, according to the 1st and 2nd topics of the National Examinations, for the student's answer.
- Basic exercises solved exemplarily according to the corresponding methodology.
- Exercises and problems for solution, the number and variety of which ensure the proper preparation of the student.
- Tests after each chapter section, according to the topics of the National Examinations.
- Combined topics in the examined sections.
- Appendix with the answers to all the questions.