Diffusion Lab

          In our science class today, we tried a diffusion lab. We put cornstarch and water in a plastic baggie, and put water and iodine in a beaker. We then put the baggie into the iodine solution and waited 15 minutes. The cornstarch in the baggie was supposed to turn purple, but it didn't work because the baggies were too strong, and the iodine didn't get through. I think the lab would have worked if we had cheaper baggies or if we waited longer.