IGCSE topic wise past papers and videos and notes

Hi dear all, This is specifically to help you clear you concepts on : Refraction of light. Total internal reflection Critical angle The videos make use of simulation models. That to pHet simulations. I'm in love with them.

Complete stoichiometry covered for IGCSE chemistry: Limiting reactants. Molar gas volume Percentage yield Percentage purity Percentage by mass Molar mass Empirical formula and molecular formula Watch the following on you tube. Videos uploaded weekly to cover the complete syllabus. You may also message me and request videos on physics chem math and bio for IGCSE that you find difficult. Intention is to help. I have taken care to see that I teach you using IGCSE PAST papers. So that you  learn the concepts and at the same time application skills. God bless u all my dear children. 

This video will help you answer questions on empirical and molecular formulae of compounds.