Salma Ahmed
English Lit. GCSE Student
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The rate of photosynthesis.
- Words:
- 2663
- Submitted:
- Mon Nov 08 2004
Have a little read: ... Rate of Photosynthesis Aim I plan to investigate how light intensity and the concentration of carbon dioxide affects the rate of photosynthesis. I will be measuring the rate of photosynthesis of a Canadian pond weed elodea by counting the amount of air bubbles given off by three strands of elodea as I increase the light intensity and concentration of carbon dioxide. Apparatus - Elodea - Stand - Ruler - Stopwatch - Lamp - Water - Thermometer - Funnel - Sodium bicarbonate - Distilled water Method Photosynthesis is a chemical reaction occurring in the leaves of green plants. Using the energy from sunlight, it changes carbon dioxide and water into glucose and oxygen. Oxygen is a 'waste' product of photosynthesis. The equation for photosynthesis is: A balanced equation for photosynthesis: 6CO2 + 6H20 --> C6H12O6 + 6O2 To measure the rate of photosynthesis I will count the frequency of the bubbles (O2) which are being expelled from three elodea stalks in a 60 second time period. Photosynthesis is the process that
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