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Diffusion Lab Review[1]
- 1. 1. What does the tubing represent? 2. What is inside the tubing? Cell membrane Starch & glucose
- 2. 3. What did we add to make the liquid outside the “cell” amber colored? Starch indicator (iodine)
- 3. 4. Why does the inside of the “cell” turn purple or black? Starch indicator diffused into the tubing High s.i.conc. Low s.i. conc.
- 4. 5. How do we know that starch did not move from the inside to the outside? No color change outside
- 5. 6. How can we find out if glucose moved into the beaker? Glucose (high conc.) ? Do a glucose indicator test using the fluid in the beaker
- 6. 7. After placing 10 drops of the amber solution into a test tube, what do we add to it? Glucose indicator
- 7. 8. After adding the glucose indicator solution (blue) what do we do with the test tube? Heat it
- 8. 9. If there is glucose in the solution, what will happen to the blue color after heating the tube for 2 minutes? The color changes
- 9. 10. The blue color changed to orange. This means that what substance is in the test tube? glucose
- 10. 11. Glucose indicator solution was added to these test tubes, and then the tubes were heated. Which will change color? starch glucose C 6 H 12 O 6