test for gasses

• How is carbon dioxide tested?

  By bubbling it through limewater
• What is the result of bubbling carbon dioxide through limewater?

  It turns milky
• What is used to test for chlorine gas?

  Damp litmus paper
• What happens to damp litmus paper in chlorine gas?

  It bleaches and turns white
• What are the tests for the four gases: hydrogen, oxygen, carbon dioxide, and chlorine?

  • Hydrogen: Burning splint → 'Squeaky pop'
  • Oxygen: Glowing splint → Relights
  • Carbon Dioxide: Limewater → Turns milky
  • Chlorine: Damp litmus paper → Turns white
• What sound does hydrogen make when tested with a burning splint?

  'Squeaky pop'
• Why does hydrogen produce a 'squeaky pop' sound?

  Because hydrogen burns rapidly
• What is used to test for oxygen?

  A glowing splint
• What happens to a glowing splint in oxygen?

  It relights