purposeful play

Erupting Rainbow Volcano

simple science experiment for kids

The Erupting Rainbow Volcano is a fun, colorful variation of the traditional vinegar and baking soda science experiments. 

Instead of using vinegar the Erupting Rainbow Volcano uses lemon juice as the acid.

Not only does using lemon juice provide a new type of chemical reaction for your child to explore-it also smells SO MUCH better than vinegar!

purpose

Shop this project

directions

How to make Erupting Rainbow Volcanoes

  • Place 6 mini plastic cups inside a tray 
  • Be sure to place a towel or newspaper underneath the tray in case the volcano eruption overflows!
  • Fill each cup 1/4-1/2 full with lemon juice
  • Add a few drops of food coloring to each cup and stir
  • Add 1-2 teaspoons of baking soda to each cup
  • Watch the reaction!
  • Continue experimenting!
  • Add more baking soda and more lemon juice to continue creating reactions!
  • Ask your child open ended questions about what they are observing
  • Introduce new vocabulary words throughout the experiment (see blow)
  • It’s a chemical reaction
  • Baking soda is the base
  • Lemon juice is the acid
  • When a base and acid are mixed together- a gas called carbon dioxide is formed causing the bubbling reaction
  • Chemistry
  • Chemical reaction
  • Base
  • Acid
  • Carbon dioxide
  • Gas

purposeful play

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.

Fall & Halloween Templates

Sign up to our email squad and get your hands on this HUGE set of Fall & Halloween cutout templates