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So, a Jedi uses the Force and a Sith uses milk?!

So, a Jedi uses the Force and a Sith uses milk?!. Got Milk: Using acid/base chemistry to explore the nature of milk. With your partner, generate responses to the following questions. Record your responses in your notebooks . (3 min) Acids and Bases

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So, a Jedi uses the Force and a Sith uses milk?!

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  1. So, a Jedi uses the Force and a Sith uses milk?!

  2. Got Milk: Using acid/base chemistry to explore the nature of milk With your partner, generate responses to the following questions. Record your responses in your notebooks. (3 min) Acids and Bases • List 2 common acids and bases. Include at least one household acid and base in your list. • Develop a good working definition for acids and for bases. • How do you differentiate between acids and bases?

  3. Got Milk: Using acid/base chemistry to explore the nature of milk(5 min) With your partner, find an acid and a base in the lab. Record these items in your notebook and test them according to your agreed upon procedure. Record your observations in your notebook.

  4. Got Milk: Using acid/base chemistry to explore the nature of milk With your partner, generate responses to the following questions based upon your readings from “On Food and Cooking.” Record your responses in your notebook. (10 min) Milk • Describe the composition of milk. Is milk considered an acid or a base? Test a small amount of milk to determine if your answer is correct. • What two proteins are present in milk? • Predict what will happen when you add an acid to milk. • Predict what will happen when you add a base to milk.

  5. Got Milk: Using acid/base chemistry to explore the nature of milk Testing Predictions: Follow lab procedure to determine the effect of acids and bases on milk. (30 min) • What states of matter did you observe? How did the states change? • Was this process a physical or chemical change? How do you know? • Compare and contrast the action of an acid and base on milk. How do your results compare to your predictions? • How do you think the acid affected the proteins to cause the change?

  6. Additional Applications • Explorations – topics/content • Demonstration • Connections to current events, nutrition, science

  7. Got Milk: Using acid/base chemistry to explore the nature of milk Further applications 1) What do you think this procedure would be useful for? 2) Develop a procedure that could be used to make cheese. Would you use an acid or a base for this procedure? Why? The addition of acid to a protein causes a phenomenon known as denaturation to occur. • Name two other examples in which denaturation occurs. • What factors, other than acid, can lead to denaturation? • Develop a procedure to test these factors.

  8. GOT Milk? The effect of detergents on milk Materials 2% milk - dishwashing liquid Food coloring - cotton swab plate Procedure 1. Pour enough milk onto the plate to cover the bottom. 2. Gently place 1-2 drops of food coloring in the center of the milk. 3. Dip the cotton swab in the dishwashing liquid. 4. Touch the coated swab to the milk in the center of the plate. 5. Record your observations.

  9. Ideas for follow-ups Advertising: The results of the “Got Milk” campaign: http://www.newyorker.com/online/blogs/currency/2014/02/the-end-of-got-milk.html Nutrition: Omnivore’s Dilemma or OFC Protein: Forces/Bonds/IMFs

  10. And, of course, CHEESE!

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