Volcano Eggs

Activity for ages 3 to 8.

Looking for a magical, gorgeous, and highly addictive way to dye Easter eggs?! These DIY volcano eggs are an awesome craft and science in one. With just baking soda and vinegar, you can make erupting eggs that are brilliantly colorful and tons of fun.

Awesome kids' science project! Make volcano eggs that fizz and erupt. Great DIY project for kids!

Getting Ready

To make volcano eggs, we first gathered a few supplies:

  • Small Jars or glasses {one for each color you want}
  • Measuring spoons
  • Baking Soda
  • Food Color or Liquid watercolors
  • Vinegar
  • Large glass or clear plastic container
  • Paint Brushes
  • Baking dish {or something with a edge to catch any overflow}
  • Hard boiled eggs

Mixing Up The Paint

My kiddos decided they needed every color of the rainbow so I grabbed 6 empty baby food jars and had my 3 year old measure 2 tablespoons of baking soda into each jar.  Since amounts don’t need to be exact, this activity provides the perfect opportunity for little ones to practice measuring.


My 5 year old then added a few drops of food coloring to each jar.  Then they added water to the jar  a few drops at a time using a dropper. It took some serious fine motor control on my 3 year olds part – he kept wanting to squeeze the entire dropper in at a time.

They used the paint brushes to mix up the slurry and stopped adding water when it became a think paste.

Fizzy Fun Time

We find the most fun activities tend to be the messiest and this one definitely needs to be done outside.  So we grabbed our paint, eggs, vinegar, large glasses, and the baking dishes and headed out to our patio.

Just a note, vinegar will kill plants so make sure any over flow is away from your plants and grass.  I was careless last summer when making volcanoes and we still have a big brown spot on the lawn a year later!


The kiddos dove right in, grabbing an egg and painting away.  As you can see my little ones had dyed hands even before the painting began, so dress your kiddos for a mess that could stain.

Once the eggs were painted it was time for fizzy fun!  My 5 year old, A, carefully lowered her paste covered egg into the vinegar.


She was all smiles as the baking soda caused the vinegar to bubble and fizz over the edge of the glass.


My daughter used a wire egg lifter to carefully lift out the egg and see the magical results.  The reaction causes some of the colors to change a bit so you never really know what you’ll get and that’s part of the fun.

Once, they saw the reaction, they immediately reached for the next egg.  We had made two dozen eggs but the kids were so excited that I had to quickly grab a few for myself before they snagged them all!


We had a blast experimenting with different color combinations and seeing how different amounts of paint affected the color.

We discovered that a good thick coat of paint not only caused a big eruption but also made the most vibrant eggs.  It also helped to let the paint sit on the egg for a minute before plopping them in the vinegar.

Awesome science for kids! Make volcano eggs that really erupt and fizz. So fun for Easter or spring.

The Science Behind It

When you add the egg to the vinegar, the acetic acid in the vinegar reacts with the bicarbonate in the baking soda paint.

When an acid and base are mixed they react to form carbon dioxide gas bubbles. These gas bubbles rise to the surface but, since carbon dioxide gas is heavier than air, the bubbles stay on the surface of the vinegar creating all that foam.

More Science That Rocks

Keep the scientific fun going with our Super Cool Science Kit – 30 jaw dropping experiments that use simple ingredients like salt and baking soda PLUS a no prep science journal to record the results! Grab your instant download HERE.

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  1. Abigail

    I love this idea! Do you know if it would work with something other than an egg (preferably not a food item)? Thank you!

    • Noirin

      The baking soda and vinegar reaction will work with anything. We just used hard boiled eggs since this was an Easter Egg dying activity. We have also painted paper with baking soda paint and then sprayed it with vinegar to watch it fizz. There are so many ways to experiment with these 2 ingredient so have fun!

  2. Kristina

    Do you need to change the vinegar for each egg? Or can it be reused?? Thanks!

    • Ashley

      Hi Kristina,
      You can re-use the vinegar for multiple eggs, but if it stops fizzing, you’ll probably want to switch it out.
      Ashley // Happiness Ambassador



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Hi, I’m Malia.

I LOVE helping Pre-K, Kindergarten and First Grade teachers save time, stay inspired and give EVERY student bigger results. I’m so glad you’re here!