hi i'm muhammad kamran chaudhary i'm chemistry lecturer in islamabad pakistan i'm teaching chemistry for last 6 years at secondary higher secondary level olevels and Alevels im chemistry expert in the following fields 1.chemical calculations 2.Theories and Experiments related to Atomic Structure 3.Chemical bonding 4.Electrochemistry 5.Chemical Reactivity 6.Chemical Equilibrium 7.Acid, Bases And Salts 8.Organic Chemistry 9.Chemical Industries 10.stoichiometry 11.ATOMIC STRUCTURE 12.THERMOCHEMISTRY 13.Fundamental Principles of Organic Chemistry 14.nomenclature of organic compounds