In this GCSE science chemistry video we look at the tests for gases oxygen, hydrogen, carbon dioxide and chlorine. Learning these tests is crucial for exams as testing gases is a regular question In paper 2.


Gas tests include:
Squeaky pop test for hydrogen
Relight a burning splint in oxygen
Limewater test for Carbon dioxide (made with calcium carbonate - not calcium chloride as I accidentally say in the video)
Litmus test for chlorine

Time stamps:

0:12 Test for oxygen gas
1:01 Test for hydrogen gas
2:11 Test for carbon dioxide
3:43 Test for chlorine gas

GCSE Chemistry
GCSE combined Science