: Frequently used in Russian schools as an introductory (propaedeutic) course. Digital copies of the textbook and accompanying tasks are often available through school portals like Gosuslugi .
: Physical vs. chemical phenomena and the Law of Conservation of Mass. skachat sbornik zadach po khimii 7 klass
: Methods of separation and properties.
Depending on your specific school curriculum, you may be looking for one of these widely used titles: : Frequently used in Russian schools as an