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Make Ice Cream in a Bag

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2 buddy reviews
by Teisha Rowland, PhD
Active Time
10-20 minutes
Total Project Time
10-20 minutes
Key Concepts
chemistry, freezing, phases of matter, solutions, freezing point depressi
Ice cream in a bag

Introduction

Have you ever made ice cream? It can be a lot of fun, and you end up with a tasty frozen treat! There is actually a lot of interesting chemistry that goes on behind making ice cream. For example, think about how you start out with refrigerated (or room-temperature) ingredients and then need to cool them down to turn them turn into ice cream. How do the ingredients change during this process? How important do you think it is that they are cooled to a certain temperature? In this science activity, you will make your own ice cream in a bag and explore the best way to chill the ingredients to make them become a creamy delicious treat!

Credits

Teisha Rowland, PhD, Science Buddies
This activity is not appropriate for use as a science fair project. Good science fair projects have a stronger focus on controlling variables, taking accurate measurements, and analyzing data. To find a science fair project that is just right for you, browse our library of over 1,150 Science Fair Project Ideas or use the Topic Selection Wizard to get a personalized project recommendation.

Materials

  • Measuring spoons
  • Measuring cup
  • Sugar
  • Half-and-half. Alternatively, milk or heavy whipping cream may be used.
  • Vanilla extract
  • Salt. Different types of salts, such as table salt or rock salt, will all work, but may give slightly different results.
  • Ice cubes (8 C)
  • Small, sealable bags, such as pint-sized or sandwich-sized Ziplocs (2)
  • Gallon-sized sealable bags (2)
  • Oven mitts or a small towel
  • Timer or clock
    Materials for making ice cream in a bag.
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Active Time
10-20 minutes
Total Project Time
10-20 minutes
Key Concepts
chemistry, freezing, phases of matter, solutions, freezing point depressi