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Science Experiments for Kids – Ice Cream in a Bag

Ice Cream in a Bag Kids Experiment

Article Written by Isabella Granara

What better way to get your kids involved in science than bribing them with a sweet treat? This science experiment is not only informational, but its results are ice cream! This is a great experiment for the summer and teaches kids about the process of making ice cream and how the ingredients are chemically bond once they shake them in a bag.

For this experiment you’ll need:

  • ½ cup heavy whipping cream OR half and half
  • ¼ tsp of vanilla
  • 1 tbsp sugar (brown sugar or granulated sugar will work)
  • ½ cup salt
  • 5-6 cups of ice
  • 1-gallon sized sandwich bag
  • (2) quart sized sandwich bags

Follow these steps:

  1. Put sugar, vanilla, and whipping cream/half and half into a quart sized sandwich bag. Release all the air and seal the bag.
  2. Put bag inside other quart sized bag and seal.
  3. Put ice inside the gallon sized sandwich bag along with the double up bag.
  4. Add salt to the gallon sized sandwich bag and seal.
  5. Now shake the bag until the cream solidifies.
  6. Once satisfied with the consistency, add your favorite ice cream toppings and enjoy!

Science of Ice Cream in a Bag

Salt lowers the temperature at which water freezes, so with salt ice will melt even when the temperature is so low! Salt lowers the temperature to the “freezing point”. The temperature of the ice was able to cool the ingredients enough to harden them and turn them into ice cream. Although pure water freezes at 0 degrees Celsius, water mixed with salt will only freeze at a colder temperature! Information from Scientific American.

Check out this article by Left Brain Craft Brain that will explain all of your questions about the process!



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