Introducing chemical reactions need not be complex! It’s as simple as experiencing the fizzy reaction that occurs with baking soda and vinegar experiments. When my kids were toddlers and preschoolers, they LOVED exploring common household items. We would pull out medicine droppers, food coloring, water, jars in various shapes and sizes, and just play!

Frozen Fizzy Easter Eggs

Recommended Grade Level:

Frozen Fizzy Easter Egg Supplies:

  • ¾ cup baking soda
  • ¼ cup warm water
  • Food coloring
  • Vinegar
  • Egg-shaped silicone mold
  • Shallow bowl

Frozen Baking Soda and Vinegar Fizzy Easter Eggs Science Experiments are the perfect way to celebrate Easter while integrating a fun science activity. You can dig deeper into the science of this eggs experiment, or just have fun with your kiddos getting a little messy! If they’re not quite ready for chemical reactions, there’s a whole lot to learn about freezing and melting, too!

Scientific Concepts to Learn with Fizzy Science Experiments at Home

From fine motor development to understanding chemical reactions, Easter science experiments allow you to customize the activity to suit your learners’ needs. If your child is ready to be introduced to the science behind the baking soda and vinegar reaction, here are some ideas:

  • Baking soda is a basic compound called sodium bicarbonate (a form of carbon dioxide)
  • Vinegar is an acetic acid
  • When the vinegar meets the baking soda, the chemical reaction forms carbon dioxide gas, which bubbles
  • When the ions of the two elements mix, they create two new chemicals: carbonic acid and sodium acetate
  • Provide background knowledge for baking soda and vinegar science projects by pointing out the carbon dioxide bubbles found in carbonated drinks

Other concepts worth exploring include mixtures, freezing, and thawing. Ask questions to get kids thinking:

  • How long do you think it will take for the eggs to freeze?
  • What is happening to the baking soda/food coloring as we stir it into the water?
  • Can you predict what will happen when we dip the egg in vinegar?
  • How can you get the frozen egg to thaw slower/faster?

How to Make Frozen Fizzing Easter Eggs

  • ¾ cup baking soda
  • ¼ cup warm water
  • Food coloring
  • Vinegar
  • Egg-shaped silicone mold
  • Shallow bowl
Overhead view of the supplies for the Frozen Fizzy Easter Eggs science activity.

1. In a large mixing cup, stir together the baking soda and water until the baking soda dissolves.

2. Add a few drops of food coloring.

3. Pour the mixture into the egg-shaped silicone mold and freeze overnight or until completely frozen.

An Easter egg mold filled with colored baking soda and water.

4. Pour vinegar into a shallow bowl.

5. Carefully lower the frozen egg into the vinegar or use a dropper to add vinegar to the frozen egg.

Overhead view of vinegar being added to an Easter egg made of baking soda and water.
How to adapt the baking soda and vinegar science experiment:
The frozen fizzy Easter egg experiment fizzing.
  1. Reverse the process by creating the eggs using a solution of vinegar and water. Freeze, then dip the frozen eggs into a solution of baking soda and water.
  2. Experiment with different ratios of baking soda to water when freezing the eggs to see which brings a more exciting reaction.
  3. Incorporate an egg drop or an egg toss before dissolving the eggs.

More Fun Easter Science Experiments

Whether boiling eggs, dying them, or getting creative with jelly beans and marshmallow bunnies, Easter science activities await! Consider adding some more interesting science experiments for kids to your Easter theme unit.

Fizzy eggs or other Easter baking soda science activities require basic ingredients from the pantry just waiting to be used up! Grab your vinegar, baking soda, food coloring, and whatever else you might find, and get creative! Don’t forget the paper towel!

  • Place jelly beans (or other Easter candy) in containers of different liquids (water, vinegar, juice, pop, etc.) to see what happens.
  • Grow crystals with borax on pipe cleaners shaped like eggs or bunny heads, or grow them inside of egg shells.
  • Place boiled eggs in vinegar for a bouncy result.
  • A fun baking soda and vinegar experiment for kids is to propel those plastic eggs with rockets propelled by the chemical reaction.

Find even more engaging activities in the Life Over C’s shop!

Frozen Fizzy Easter Eggs Science Experiments for preschoolers
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Kim Staten Owner and Curriculum Designer
Kim Staten is a mother of four children ages 20, 19, 16, and 12. Kim has taught at the preschool, kindergarten and early elementary levels for 16 years. With extensive experience working with special needs children, including her own children with special needs (Rett Syndrome, autism, anxiety, and ADHD), she creates hands-on curricula and activities that are great for working with children of all abilities in the classroom and at home. Hands-on, accessible activities are her passion. 

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