Presentation used along with a Gummy Bear Osmosis Lab.

1. Molecules All Around

2. What is this called?
 Molecules tend to slowly spread apart over time..

3. Concentration Gradient

4. Objectives
 SWBAT define diffusion and osmosis.
 SWBAT identify if a cell is in a hypotonic, hypertonic, or
isotonic solution.
 SWBAT give examples of diffusion and osmosis in real-life
scenarios.

5. Exploration
 Tap water Salt water Distilled water

6. Directions
 First, complete your Hypothesis.
 Get signature from teacher.
 Obtain materials
 Measure bears or carrots.
 Place one in each water solution, wait 15 min.
 Measure again and observe changes.

7. Explanation
 Let’s share our findings…

9. Osmosis

11. Good Luck!
1. When the concentration of solutes outside the cell is
greater than inside the cell the solution is said to be
a. hypotonic.
b. hypertonic.
c. isotonic.
d. saturated.
2. Movement of water through a cell membrane, rather than
solute, is called
A. Simple Diffusion
B. Solvent Diffusion
C. Osmosis

12. Ok now that we have done an activity
on diffusion and we know what it
means let’s apply it to real life
scenarios.

13. Gatorade vs. Water

14. If a shipwrecked crew drank seawater,
they could die. Why?

15. Why do grocery stores spray their fresh
produce with water?

16. Why is diffusion important in real life?

17. Objectives
 SWBAT define diffusion and osmosis.
 SWBAT identify if a cell is in a hypotonic, hypertonic, or
isotonic solution.
 SWBAT give examples of diffusion and osmosis in real-life
scenarios.

18.  No talking
 Independent
 Make sure to write your name on top
 GOOD LUCK!