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How is Cheese Made?

Understand how acids form curds in milk through a mini-lab and explanation of the phenomena using concepts of electrostatic charges and solubility.

-

grade:

6

9

time:

1-2 class periods

active lab time:

20

minutes

objectives:

- Experience how casein proteins precipitate from milk when acid is added
- Learn why and how casein proteins change when an acid is added to milk
- Understand why casein proteins become insoluble during cheesemaking

science concepts:

chemical changes, polarity, intermolecular forces, solubility, cheese

essential questions:

- What ingredients are in cheese?
- How do we make cheese?
- What occurs when we add an acid to milk and why?

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