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ICE CREAM MATTERS

ICE CREAM MATTERS. A TASTY PHASE CHANGE. Safety First!!!!. Follow all instructions Report all accidents. Materials:. 1/2 cup milk
1/2 teaspoon vanilla
1 tablespoon sugar
4 cups ice
4 tablespoons salt 1 sandwich size bag 1 quart size Zip- loc bag (double to prevent spill)

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ICE CREAM MATTERS

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  1. ICE CREAM MATTERS A TASTY PHASE CHANGE

  2. Safety First!!!! • Follow all instructions • Report all accidents

  3. Materials: • 1/2 cup milk
1/2 teaspoon vanilla
1 tablespoon sugar
4 cups ice
4 tablespoons salt 1 sandwich size bag 1 quart size Zip-loc bag (double to prevent spill) 1 gallon size Zip-loc freezer bag
A hand towel or gloves to keep fingers from freezing as well!

  4. Step 1: Mix the milk, vanilla, and sugar together in the sandwich size bag BE CAREFUL:Seal tightly, allowing as little air to remain in the bag as possible!!!!

  5. Step 2: Put the (sealed!) milk mixture bag into the quart size Zip-loc bag to prevent leaks and seal

  6. Step 2: Put the bags inside the gallon size bag and fill the bag with ice, then sprinkle salt on top ****Sealed release air!!!!

  7. Step 3:Wrap the bag in the towel, and shake the bag, making sure the ice surrounds the cream mixture.

  8. Step 4: Five to eight minutes is adequate time for the mixture to freeze into ice cream.

  9. Consider the following: • What state of matter was the milk when you began? • What state of matter was the milk when you were done? • In order to change the phase of the milk, what had to be removed? • What happened to the heat energy that left the milk? • Why was the salt added to the ice? • If you did not add sugar would the ice cream have frozen faster? Why? • Why did the outside of the bag get wet? (Assume that your bag did not spring a leak.) • Extension: Why is salt spread on the roads before a winter storm?

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