Introduction: Photosynthesis is the use of sunlight to produce carbohydrates. To produce carbohydrates, photosynthesis converts energy from sunlight into chemical energy in sugar bonds. Photosynthesis occurs only in the green parts of plants, where the green part is made up of chlorophyll pigments. An example of this would be the leaves of a plant. For photosynthesis to occur, sunlight, carbon dioxide and water are essential, however oxygen is produced in the process. Photosynthesis consists of two sets of related reactions. The first reaction is triggered by light producing oxygen from water. The second produces sugar from carbon dioxide, this is known as the Calvin Cycle. Both reactions are linked by electrons that are released when water is poured to form oxygen. Photosynthesis occurs in the chloroplasts of leaves. The chloroplast is made up of the photosynthetic pigments chlorophyll A, chlorophyll B, carotene, xanthophyll and enzymes. The chloroplast captures light energy and is embedded in the membranes of the thylakoids, which also store other pigments. The reaction of photosynthesis is6〖CO〗_2+6H_2 O+Light energy -〉 C_6 H_12 0_(6 )+6O_2The products of the reaction of photosynthesis are ATP and NADPH, which the Calvin cycle then uses these products. ATP provides energy for the cycle while NADPH provides the electron to reduce carbon dioxide to form carbohydrates. The first part of the experiment consisted of testing the presence of starch in plant leaves. A portion of the leaf was covered with aluminum foil; therefore no light absorption occurred in the chloroplasts in this portion. The hypothesis for this experiment was that the covered part of the leaf contains no starch, but the uncovered, or exposed, part is......in the center of the paper......t distances is because the molecules have dimensions variable, so they differ when placed in a nonpolar hydrophobic solvent. Different pigments absorb different wavelengths of light at different rates. The carotene, the orange, has moved higher making it hydrophobic. Chlorophyll-A, dark green, was the next furthest away, making it more hydrophobic than chlorophyll B, light green. The xanthophyll, yellow bands, was the least hydrophobic and moved the least. This showed that the hypothesis was not supported. The polar aldehyde functional group on chlorophyll B makes it less hydrophobic than chlorophyll A. Meanwhile the extra polar group on xanthophyll makes it less hydrophobic than carotene. The importance of this experiment was to demonstrate that the different color pigments in the Leaver are made up of different structures and absorb light at different wavelengths.