Donate HereCategory: O-level chemistry videos
Preparation of hydrogen
procedure of preparation of hydrogen and worked examples Read More
Preparation of oxygen with worked examples
principles of preparation of gases i.e. preparatory state, purification stage, drying stage, and collection stage. Preparation oxygen, sample questions and answers Read More
Preparation of gases
Stages of gas preparation, preparation of oxygen, testing for oxygen Read More
Rates of reaction lesson 1 of 2 by Dr. Betty Science
how to determine the rate of reaction Plus worked examples Read More