: They offer specialized collections of control and independent work (e.g., by E. A. Segen or O. I. Sechko) specifically designed for the 7th-grade level. You can check for official digital copies on the Aversev Website . Common Topics Covered
Depending on your specific school curriculum, you may be looking for one of these widely used titles: skachat sbornik zadach po khimii 7 klass
Сборник задач по химии. 7 класс - Аверсэв : They offer specialized collections of control and
: Atoms, molecules, and symbols of elements. skachat sbornik zadach po khimii 7 klass
: Methods of separation and properties.