Have you ever wondered why it took you so long to try making ice cream in a bag? This fun and easy experiment is a great way to engage students and teach them scientific principles. The setup is quick and simple, requiring only a few ingredients that you likely already have on hand. If you don’t have rock salt (ice cream salt), you may need to pick some up before getting started.
To make the Ice Cream in a Bag Experiment even more engaging for your students, be sure to grab the free worksheet available by clicking the button below.
What can conducting the Ice Cream in a Bag Experiment teach your students? This hands-on activity covers a range of scientific fundamentals, including the different stages of matter, changes in phases, the impact of temperature on solubility, and the transfer of heat.
If you prefer a visual guide, there is a helpful video available that provides step-by-step instructions for conducting the Ice Cream in a Bag Experiment.
To get started with the experiment, gather the following materials:
– ½ cup half-and-half
– ¼ teaspoon vanilla
– 1 tablespoon sugar
– 1 gallon-sized plastic zip-top bag
– 1 quart-sized plastic zip-top bag
– ⅓ cup rock salt (ice cream salt)
– 3 cups crushed ice
Follow these steps to make your own ice cream in a bag:
1. Pour half-and-half into the smaller zip-top bag and add vanilla and sugar. Seal the bag tightly.
2. Add rock salt and ice to the larger zip-top bag.
3. Place the smaller bag inside the larger bag and seal it tightly.
4. Shake and squeeze the bag until the ice cream thickens, which may take 5 to 10 minutes.
5. Remove the smaller bag and enjoy your homemade ice cream!
This set of directions yields enough ice cream for a small group of students to enjoy a spoonful each. If you need to make more for a larger class, simply triple the recipe or make multiple batches during your small-group time.
For a printable version of the experiment, click the button provided to receive your worksheet bundle.
Looking for more experiment ideas like the Ice Cream in a Bag Experiment? Check out our big list of experiment ideas for inspiration.
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