How To Test For Different Gases

To test for hydrogen, insert a lighted splint into a test tube filled with the gas (hydrogen) and listen out for a squeaky pop. If this occurs, the test is successful.

To test for Oxygen, place a glowing splint (NOT LIGHTED) - the same as hydrogen - and look to see if the splint relights. If it does, you have successfully tested for oxygen.

To test for Carbon Dioxide, add limewater to it in a beaker and observe. See if the solution turns white or cloudy.

To test for an acid, add universal indicator to it in a beaker and see if the solution turns red/ orange.

Finally, testing for alkalines is very similar to testing for acids. Add universal indicator to it in a beaker and see if the solution turns blue/ purple.