Baking soda and vinegar reaction is our #1 simple science experiment that is so versatile for each holiday! We have found creative ways to explore preschool science all year round. Of course, Easter has to have a baking soda and vinegar reaction like these fizzy rainbow Easter eggs! Open the kitchen cupboard and get started right away on this baking soda and vinegar rainbow Easter Eggs activity.

Fizzy Rainbow Easter Eggs

Let’s get right to exploring this chemical reaction with baking soda and vinegar. Head to the kitchen, open the pantry and be prepared to get a little messy. Make sure to have a tray and paper towels available for spills!

This RAINBOW EASTER EGGS activity asks the question:  What happens when you mix baking soda and vinegar together?

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Supplies:

  • Plastic eggs
  • Egg tray
  • Eyedropper, squeeze bottle, or meat baster
  • Baking soda
  • Vinegar
  • Food coloring

Instructions:

STEP 1:  Set up a tray with an egg carton (clear plastic or styrofoam will work best) and set up your eggs.

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STEP 2: Add several drops of food coloring to each egg (this step is optional but very fun for surprise color eruptions). You can also color separate containers of vinegar and let the kids mix and match colors.

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STEP 3: Now, go ahead and fill each egg with a spoonful of baking soda! You can add a pinch of glitter on top if desired!

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STEP 4: Now it’s time for the excitement! Set out a bowl of vinegar for eyedroppers or meat basters. Or you can fill a squeeze bottle with vinegar.

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Tips For Baking Soda and Vinegar In The Classroom

Kids will love testing and retesting this simple chemical reaction, so I always recommend having extra vinegar on hand. If you are working with a group of kids, use small bowls and one egg each!

Don’t like the smell of vinegar? Try this activity with lemon juice and baking soda instead! Since lemon juice is also an acid, it produces a chemical reaction when combined with baking soda. Check out our lemon volcanos!

The plastic eggs will get messy, but you can turn the end of the activity into an egg washing station and water sensory bin too!

The Science of Baking Soda and Vinegar

The science behind these fizzy rainbow Easter eggs is all about the baking soda and vinegar and the fizzy bubbles that result!

When the acid (vinegar) and the base (baking soda) mix together, a chemical reaction happens. The baking soda and vinegar get used up in making a new substance, a gas called carbon dioxide. The fizzing bubbling action you can see and even feel if you put your hand close enough, is the gas!

All three states of matter are present: liquid (vinegar), solid (baking soda), and gas (carbon dioxide).

Loved this activity? Check out more fun baking soda experiments!

Get your free printable Easter STEM cards!

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Printable Easter Project Pack

  • 20+ Easter science activities and STEM projects kids that are easy to set up and fit into the time you have available even if it’s limited!
  • Printable Easter theme STEM activities that are simple but engaging for home or classroom. Perfect for K-2 and beyond but easily adaptable to many skill levels.
  • Dive into simple background science explanations to share with kids while they explore hands-on and playful experiments, projects, and activities such as Easter oobleck, erupting eggs, regrowing lettuce, and more!
  • Engaging Easter STEM activities pack with theme activities, journal pages, and design process steps! Learn about the design process and think like an engineer while you design and build a better Easter basket and more!
  • Easy to gather supplies makes these STEM activities ideal when you have limited resources available. Specialty activities include a catapult and balloon rocket challenge pack with log sheets!
  • Additional STEM activities: Include the great Easter egg tower, spaghetti, marshmallow challenge Easter theme, brick building ideas, puzzles, and screen-free coding activities.

INCLUDES: 

  • Easter STEM Pack
  • PEEPS Theme STEM Pack
  • Easter Slime Science Pack

9 Comments

  1. I bet my sensory seeker would love that and it being good for his fine motor would be a bonus

  2. Another wonderful activity! I LOVE your blog and am only sorry its taken until now to discover it!! Thank you, this is wonderful and yet another one my son will love!
    x x

  3. I follow you daily/weekly for the letter of the week that I do with my Pre preschool kids. I haven’t started them in a real preschool program as of yet as they are just 3 but wanted them to be ready for the preschool in the fall. Its been sooo much fun following your activities!! you make my work so much easier. We will do this activity this week and follow by egg washing. Thank you.

  4. My son adores activities like these! Thanks for allowing me to share in my Easter Roundup 🙂

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