1. Osmosis Lab

2. Part A Setup: Sucrose Bags Label 3 plastic cups assigned to you. Label 3 plastic cups assigned to you. 0.0M Bag,0.4M Bag,0.8M Bag 0.0M Bag,0.4M Bag,0.8M Bag OR OR 0.2M Bag, 0.6M Bag, 1.0M Bag Prepare each bag Prepare each bag  Tie a knot in one end of a bag  Add 10mL of sucrose solution  Leave room for expansion, and tie the other end Mass the bag Mass the bag  Mass the cup  Zero the balance and add the bag  Record as initial mass Add 1/3-cup of tap water to the cups only after ALL massing is done Add 1/3-cup of tap water to the cups only after ALL massing is done

3. Part B Setup: Potatoes Label 6 plastic cups R, O, Y, G, B, I. Label 6 plastic cups R, O, Y, G, B, I. Place 4 potato cores in EACH cup Place 4 potato cores in EACH cup Mass the cores (mass the cup, tare, add the cores, and record as initial mass) Mass the cores (mass the cup, tare, add the cores, and record as initial mass) Add the appropriate solution color to each cup only after ALL massing is done Add the appropriate solution color to each cup only after ALL massing is done Store the cups in the trays next to the microwave overnight Store the cups in the trays next to the microwave overnight

4. Part A Completion: Sucrose Bags After the allotted time… After the allotted time…  dump the solutions in the sink,  blot dry each cup and bag,  record the final mass of each bag,  calculate % change in mass (final-initial)/initial Record your data online Record your data online

5. Part B Completion: Potatoes After the allotted time… After the allotted time…  dump the solutions in the sink,  blot dry the cups and cores,  record the final mass of each set of cores,  calculate % change in mass (final-initial)/initial Record your data online Record your data online