Gas tests for IGCSE and O Level Chemistry 

In this video I am going to show you how to perform identification tests for ammonia, carbon dioxide, chlorine, hydrogen, oxygen, and sulfur dioxide gases. There are the required tests in IGCSE and O Level Chemistry syllabi.
0:00 Source, ammonia
1:54 Carbon dioxide
3:13 Chlorine
4:23 Hydrogen
4:53 Oxygen
6:18 Sulfur dioxide
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