: Portals like Moya Shkola (Obozrevatel) offer an online version of the GDZ specifically for the 2011 edition. These are often categorized by grade (8 or 9) and then by specific work/variant.
: Electrolytic dissociation, metals and non-metals, and organic chemistry basics. : Portals like Moya Shkola (Obozrevatel) offer an
: Most assignments come in 2 to 4 variants. Ensure the GDZ you are looking at matches the specific variant assigned in class. Tips for Using the GDZ Effectively metals and non-metals