Diffusion Through The Cellphane Membrane
189 Words1 Pages
Claim: Of three molecules, glucose and iodine diffuse through the cellophane membrane
Evidence: Starch and glucose were placed in the cellophane while the iodine was placed in the beaker. After the starch sat in the beaker for 10 minutes, it turned a dark, purple color. These results mean that iodine diffuses through the membrane.The color of the beaker, which had the iodine didn’t have a purple/black color in the beaker indicating the starch didn’t diffuse through the membrane. The test strip changed color after gently swirling it in the beaker for 1 minute. This means that the glucose can diffuse through the membrane
Reasoning: Diffusion is the transport of small particles
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