Photosynthesis Practical
- Pour sodium hydrogen carbonate solution into a boiling tube
- Place pondweed in the tube
- Using a metre ruler, place the pondweed boiling tube 10cm away from the light source, with a tank of water inbetween to magnify the light rays
- Using a stopwatch, wait two minutes for the pondweed to start producing bubblese
- Using the stopwatch, count the number of bubbles produced in one minute
- Repeat steps 4 and 5, moving the pondweed boiling tube 10cm further away each time