Beverage Lab

Orange Juice Could you see bits of different materials with different properties? Were these bits solid, liquid, or gas? What are these little solid bits called? Where does pulp come from? Did you decide the OJ was homogeneous or heterogeneous?

Orange Juice

Soda Pop What did you see in the soda pop? Were these different bits solid, liquid, or gas? What kind of gas was it? Did you decide the pop was homogeneous or heterogeneous?

Soda Pop

Bubbles in Soda Pop Can you see any bubbles in an unopened bottle of pop? When you open it, where does all the fizz come from? Where was all the carbon dioxide before you opened the bottle?

Homogenized Milk With your naked eye, did the milk look homogeneous or heterogeneous? What did you see under the microscope? Were the different bits solid, liquid, or gas? What were these different bits?

Homogenized Milk

Blobs in Homogenized Milk

Shaking breaks the membrane

Homogenization After raw milk is pasteurized, it is forced through tiny tubes at high velocity and pressure to homogenize it. This breaks the fat blobs into smaller blobs that cannot cluster together and rise to the top. http://class.fst.ohio-state.edu/Dairy_Tech/10.0%20Homogenization.htm

Raw versus Homogenized Milk http://www.foodsci.uoguelph.ca/dairyedu/homogenization.html

… like Oil and Water.

Skim versus Homogenized Milk

What if we shook a coffee creamer? Could we make butter? Hmmm…Shaking separates fat from milk … What if we shook a coffee creamer? Could we make butter?

Don’t Forget Title Pages Homework Mixtures and Pure Substances Summary Homogeneous versus Heterogeneous Due TOMORROW

Write a Summary What is homogeneous? Give one example. Must be done on loose leaf. Must be well written. What is homogeneous? Give one example. Why is this homogeneous? What is heterogeneous? Give two examples. Explain why each one is heterogeneous.

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