purposeful play

Rainbow Cupcake Science Experiment

hands-on summer activity for kids

This Rainbow Cupcake Science Experiment for kids is a super fun, hands-on summer activity your kids will love!  This simple STEM experiment only requires a few ingredients and will keep your kids engaged for quite awhile this summer. Keep reading for the step by step instructions and to shop this project!

purpose

  • Builds new brain connections

  • Increases your child’s ability to absorb what they are learning

  • Helps develop memory skills

  • Develops fine motor and language skills

  • Experiments with cause and effect

  • Explores chemical reactions in a safe, colorful way

  • Screen-free fun!

Shop this project!

directions

How to do the Rainbow
Cupcake Science Experiment

  • 2-3 tbsp water

  • Red food coloring

  • 4-5 tbsp baking soda

Tip: Mix water and food coloring together first before you add the baking soda

  • Stir the ingredients together 

  • Mix well until mixture is paste like

  • Add the mixture to a silicone cupcake liner

  • Repeat the process with the other 5 colors of the rainbow

  • Place the cupcakes in the freezer

  • Freeze for 1-2 hours

  • Add lemon juice to a squirt bottle

  • You can also use vinegar instead of lemon juice. We just like to use lemon because it smells really good!

  • This can be done inside or outside

  • Consider placing the cupcakes inside a tray to prevent making a mess

  • If you do this outside without a tray and on a pavement-be aware as it could stain the pavement.  Be sure to rinse the pavement immediately after the experiment is over

  • Squirt lemon juice into each cupcake

  • Watch the erupting rainbow volcanoes!

  • Continue adding lemon juice (or vinegar)

  • This experiment can last a long time as long as you have lemon juice-so be sure to have plenty on hand!

Keep the learning going with this FREE Weather Matching Printable! Sign up for our newsletter and get this printable sent directly to your inbox

summer science experiment

What is the science
behind the Rainbow Cupcake Science Experiment?

  • It’s a chemical reaction

  • Baking soda is the base

  • Lemon juice is the acid

  • When a base and an acid are mixed together- a gas called carbon dioxide is formed causing the bubbling reaction

  • Chemistry

  • Chemical reaction

  • Base

  • Acid

  • Carbon dioxide

  • Gas

More Rainbow Activities!

Hello there! I'm Sarah Britton and I am so excited you stopped by! Join me as we explore simple yet effective ways to create purposeful play opportunities for your child.

thanksgiving turkey craft for kids

Turkey & Thanksgiving Crafts

Sign up to our email squad and get your hands on this HUGE set of Turkey and Thanksgiving crafts.