Merry Christmas!! We had a “sweet” time using our scientific knowledge to create ice cream. Students really had a new appreciation to the wonders of SALT.
What does the salt do? Just like we use salt on icy roads in the winter, salt mixed with ice in this case also causes the ice to melt. When salt comes into contact with ice, the freezing point of the ice is lowered. This allows the ice to go below 0 degrees F and create that tasty goodness we call ICE CREAM. When we come back from Christmas we will be creating a contraption to catch a “naked egg”. Your job is to create a design that will keep an egg from breaking as it fall from a ladder. The shortest design that catches the egg from the highest drop will win!
To make ice cream, you will need the following materials for each student:
- one teaspoon of sugar
- 1/4 cup milk
- 2 drops vanilla extract
- measuring cups and spoons
- 1 locking sandwich bag
- 1 locking quart-size bag
- 2 cups of ice
- 1/2 cup of rock salt
- one sheet of newspaper
Instructions
1.Put one teaspoon of sugar, 1/4 milk, and 2 drops of vanilla extract in the locking sandwich bag.
2. Seal the sandwich bag. From the outside of the sandwich bag, squish the bag repeatedly to mix the contents.
3. Place the small bag inside the large one, and seal it again carefully. 
4. Then wrap the big baggie up in newspaper so that it looks like a tootsie roll.
5. Have two students take one end each, and shake the ‘tootsie roll’ for about 5 min.
6. Wipe off the top of the small bag, and then open it carefully.
7. You now have ice cream!!!! Get a spoon, add your toppings, and eat
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