Hydrogen, Oxygen and Carbon Dioxide

Question 1

what’s the test for hydrogen

Answer 1

1) Hold a lit splint at the opening of the test tube

2) if the gas is hydrogen there will be a squeaky pop as the hydrogen reacts with the oxygen to for H20

Question 2

what’s the test fro carbon dioxide

Answer 2

1) Shake carbon dioxide with an aqueous solution of calcium hydroxide ( AKA lime water )
2) solution will turn from clear to limewater

Question 3

what’s the test for oxygen

Answer 3

1) insert a glowing splint into a test tube

2) the splint will relight if the gas is oxygen