Testing For Gases

• Testing for hydrogen

  Place lit splint into boiling tube
• What is the result when testing for hydrogen?

  Squeaky pop
• Testing for oxygen

  Add 1/2 spatula of hydrogen peroxide to the boiling tube, and add magnesium oxide to the conical flask, put glowing splint in boiling tube
• What is the result when testing for oxygen?

  splint relights - oxygen is needed for combustion
• Testing for Carbon Dioxide

  Add calcium carbonate to hydrochloric acid
• What is the result when testing for carbon dioxide?

  bubble gas produced through limewater
• Test for Chlorine

  use damp litmus paper
• What is the result when testing for chlorine?

  bleaches damp litmus paper