1. Exploring Redox Reactions & Fractals Ms. Pittman MathScience Innovation Center

2. Objectives Define the term “fractal”. Define the term “fractal”. Understand the function of each part of a corrosion cell. Understand the function of each part of a corrosion cell. Interpret an equation for an oxidation-reduction reaction. Interpret an equation for an oxidation-reduction reaction. Understand how the measurement of fractal dimensions can be used to predict and analyze complex patterns in the natural world. Understand how the measurement of fractal dimensions can be used to predict and analyze complex patterns in the natural world.

3. What is a fractal?

4. Fractal Dimension

5. Electrochemical Corrosion

6. Wet Corrosion

7. Corrosion Cell 4Fe + 3O 2  2Fe 2 O 3 Fe +2 + 2e - anode oxidation loss of e - Fe +3 + e - cathode gain of e - reduction Fe(OH) 3 XH 2 O

8. Corrosion Cell 4Fe + 3O 2  2Fe 2 O 3 O 2 + 2H 2 O + 4e -  4OH - anode / oxidation Fe  Fe +2 + 2e - cathode / reduction

9. Corrosion Cell 4Fe + 3O 2  2Fe 2 O 3 Fe +2 + 2e - anode oxidation loss of e - Fe +3 + e - cathode gain of e - reduction Fe(OH) 3 XH 2 O

10. Hele-Shaw Cell

17. Experiment

19. 1. What happened to the water levels in the tubes during this experiment?

20. 2. Did a limiting reactant determine the quantity of rust that formed during this activity?

21. 3. Did the presence of tin appear to affect the rate of this reaction?

22. 4. Oxidation or Reduction? Fe  Fe +2 + 2e- O 2 + 2H 2 O + 4e -  4OH - Oxidation Reduction

23. 5. 4Fe + 3O 2  2Fe 2 O 3 Fe + O 2  Fe 2 O 3 00 +3-2

24. Fractal Dimensions

25. 1 2 3 21

26. Fractal Applications Life Science Earth Science Physical Sciences