Osmosis and Diffusion
“You made me ink”

In this experiment we placed Glucose in a clear bag, and placed the bag in Iodine and waited for it to change colors indicating that the Glucose and Iodine reacted to one another. We also placed an egg in salt water solution and weighed it every 15 minutes. The results for the glucose and iodine were inconclusive because our experiment never changed colors nor did we get a chance to do the second half. Diffusion is the movement of molecules from a region of higher concentration to a region of lower concentration. Osmosis’s the diffusion of water molecules across a semi permeable membrane. I think that when the glucose interacts with the Iodine the color will change only a slight bit.
Our results were inconclusive because we didn’t actually get a chance to see the reaction of the interaction, but were informed that the solution in the bag will turn purple and the solutions in the beaker would turn blue/orange. On the egg experiment our results showed that the egg placed in ten percent salt water weight decreased into the negatives, and the egg in the distilled water weight increased over 15 minute increments. As shown in table 1.

Egg in distilled water Egg in salt water Time(n) | Weight(g) | Percent change | Time(n) | Weight(g) | Percent change | 0 | 87.5 | 0 | 0 | 85.8 | 0 | 15 | 88.1 | .68 | 15 | 84.6 | -1.4 | 30 | 88.4 | .34 | 30 | 83.9 | -0.83 | 45 | 88.8 | .45 | 45 | 83.5 | -0.48 | 60 | 88.5 | .11 | 60 | 83.3 | -0.24