: Exploring the properties and compounds of elements like Halogens, Oxygen, Sulfur, Nitrogen, and Carbon.

: It introduces the laws governing chemical reactions and the theory of electrolytic dissociation—explaining how substances behave in solutions.

The book by A.M. Radetskii is not a story or a novel, but a collection of educational resources used in Russian schools to supplement chemistry textbooks.

The "story" of the 9th-grade portion of the book is essentially the progression of modern inorganic chemistry: