Identify the Gas

Matching Quiz

Match each pair by dragging from right to left.
Then select the Check button to see your result.
Lightest of all gases
Turns limewater from colourless to milky white
Slightly soluble in water and needed for respiration
Main component of natural gas
Make up most of our atmosphere
Poisonous, odourless gas
Hydrogen
Carbon dioxide
Oxygen
Methane
Nitrogen
Carbon monoxide