Revised fourth edition
approved by the Ministry of Public Education of the Republic of Uzbekistan as a textbook for the 9th grade of general secondary schools TASHKENT "UZBEKISTAN" Reviewers: AQ Abdushukurov Sh.M. Mirkomilov Sh.A. Kadirova Sh. Ganiyeva L. Bobokulova Sh. Gopirov D. Ochilov 4th edition. — T.: "Uzbekistan" NMIU, ISBN 978–9943–07–261–9 UOK 54(075) ЭBK 24.1ya72 — Professor of the National University of Uzbekistan, doctor of chemical sciences; — Professor of the Department of Chemistry and Chemistry Teaching Methodology of ToshDPU; — Professor of the National University of Uzbekistan, doctor of chemical sciences; — School 104, Sergeli district, Tashkent city
chemistry teacher of;
— Teacher of chemistry at school 258, Yunusabad district, Tashkent city;
— Senior chemistry teacher of 44-IDUM, Shahrikhan district, Andijan region;
— Teacher of high class chemistry of the 21st school in Karmana district, Navoi region.
