Photosynthesis Lab Report

The rate of photosynthesis in each of the beakers will depend what is wrapped around the beakers such as red and blue cellophane, as well as the control of the experiment the beaker without cellophane. The cellophane will directly impact the light getting absorbed as well as the amount of CO2 in the beakers. Which overall as result will determine the final color of the water mixed with bromothymol blue. What was being measured was the color of the water after CO2 has been blown in the beakers. The Experiment would involve 4 different beakers which all contained the same amounts of BTB, water and elodea (The Constants) to ensure the overall experiment was more foolproof. The control was the beaker that had no cellophane over it to show what it would look like and how the different colors of cellophane would affect that The independent variable was the light frequency which would overall determine the level of acidity in each solution which is the dependent variable.
Our group took off the different types of cellophane and viewed the colors of the water. The water colored with blue cellophane was a greenish blue color, the green cellophane was a greenish yellow, the one with no cellophane was a dark blue which meant it received a surplus amount of oxygen which changed its color from a green because a part of the experiment was to blow CO2 into the water with straws and see how the cellophane affects the color of the water. The one with tinfoil just stayed yellow. The reasoning behind these color changes of the solution from light is based on the rate of