Use sites like YaClass or InternetUrok to find similar problems. They provide step-by-step theory that matches the tasks in Sofronov's manual.
The content typically covers the foundational 8th-grade chemistry curriculum: Atoms, molecules, and chemical formulas. Atomic Structure: Protons, neutrons, and electron shells. Chemical Bonds: Ionic, covalent, and metallic bonding. Use sites like YaClass or InternetUrok to find
Oxides, bases (hydroxides) , acids, and salts. and chemical formulas. Atomic Structure: Protons
Platforms like the Russian State Library (NEB) allow you to view the bibliographic details and sometimes digitized excerpts of the manual. and electron shells. Chemical Bonds: Ionic