+7 (727)
344 95 95
Please email us
English
Русский
Қазақша
Subscribe
Profile
Subscription
Balance
Watch history
My library
Notifications
My contests
Поурочные планы
Logout
Русский
Қазақша
Online Mektep
Authorization
Home
Subjects
Contests
Subscribe
Chemistry course
Main
Courses on International standards
Chemistry course
Inorganic Chemistry
Metals
Metals
Neutralisation reactions
Oxides. Their Classification and Properties
Salts
Acids (2)
Hydrogen halides
Indicators
Acids (1)
pH Scale
Reactions of Acids and Bases
The Trends in the Properties of the Oxides
Properties of Bases
