1. Osmosis and Diffusion Lab What substances can move in and out of cells? How? Create a questions that can be turned into a hypothesis and tested using the materials and measurements indicated in this presentation.

2. Equipment Scales Beakers Graduated Cylinders Metric Rulers Saturated Salt Solution 50% Saturated Salt Solution Food coloring Small plastic cups Potatoes Plastic Knives Distilled Water

3. Measurements + Calculated Properties Mass Volume Length/width/height

4. Questions How does food coloring affect cell mass/volume/color? Do different dyes move in/out of cells at different rates?

5. Questions? Do potato cells change mass/volume by soaking in different amounts of salt? Which soaks in more of food coloring in different salt solutions?

6. Questions Does mass change from things entering/leaving cells based on solution type? Does potato size or shape affect water/salt/dye entering or leaving its cells?