Identification of common gasses

• How to test for hydrogen 


  Using a burning splint which is held on the open side of the test tube, it will burn rapidly with a pop sound
• How to test for oxygen 


  Using a glowing splint which is inserted into the test tube which then relights in oxygen
• How to test for chlorine 


  Using litmus paper, when the litmus paper is damp and put into chlorine gas the paper will be bleached and turned white
• How to test for carbon dioxide 


  Using an aqueous solution of calcium hydroxide (lime water) when carbon dioxide is shaken or bubbled through the limewater, it will turn milky.