Chapter 3: Diffusion and Omsosis

Materials:
Elodea plants
cheap perfume
Methylene Blue
IKI
thistle tube
thermometer
Solutions of Water

Process:
1.) Brainstorm solutions and explanations for selectively permeable membranes.
2.) Observe diffusion with a charcoal solution.
3.) Spray perfume and observe how long it takes for the solution to travel across the room.
4.) Put IKI and Methylene Blue into an agar and observe which solution dissolves more into the solid agar.
5.) Subject different elodea cells to different concentrations of water solutions and observe how the water diffuses into and out of the cells.
6.) Analyze the data you have collected.