Making Ice cream in a Bag experiment

1/2 cup Heavy Whipping Cream
1/2 teaspoon vanilla (Optional)
1 tablespoon sugar
4 cups crushed ice
1/2 cup Ice Cream salt (Rock Salt)
2 quart size Zip-loc bags
1 gallon size Zip-loc freezer bag

When salt and ice mix, the freezing point of the ice is lowered and the freezing point reached depends on the amount of salt used. The more salt is added, the lower the temperature can get before the saltwater solution freezes. Remember the more salt add the colder your hands will get.