Photosynthesis

• 1


  place a test tube 10cm away from the lamp and fill it with sodium hydroxide carbonate solution
• 2


  place cut pondweed inside the tube and let it sit for 5 minutes
• 3


  start stopwatch and count the number of bubbles produced in 1 minute and repeat twice for a mean
• 4


  repeat the experiment with different distances from the lamp