This Fizzing Sidewalk Paint recipe is by far one of our kids’ most favorite play recipes of all times. This outdoor paint activity works great for kids of all ages and adds a little fizzy to artful science! You can paint masterpieces on your driveway, sidewalk or playground surface. This DIY sidewalk chalk paint is great for home or at school recess or outdoor classroom activity.

Fizzing Sidewalk Paint
Let’s play with fizzing sidewalk paint!

Make Fizzing Sidewalk PAINT

Sidewalk chalk is fun, painting is fun, and making things fizz is also fun! Let’s do all three!

Related: Exploding baggies science experiment for kids & The Art of Block Printing for Kids

This is a really simple recipe to create sidewalk chalk “paint” out of food coloring, baking soda and cornstarch.  We have made the standard sidewalk chalk paint before, but this recipe is better – it fizzes when you spray it with vinegar.

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Supplies Needed for Fizzing Sidewalk Chalk Paint

Video: How to Make Fizzing Sidewalk Paint

How To Make Awesome Fizzing Sidewalk Paint

Step 1

Mix the dry ingredients and then add water, stir until the mixture is not too thick.   I think we used about a cup water.    

Step 2

Fizzing Sidewalk Paint 2
This sidewalk paint is so vibrant and more opaque than I thought it would be.

Using a paintbrushes, foam brushes, sponges, squeeze bottle paint with the DIY chalk paint on your desired surface creating whatever pictures works best. Layer the next color as desired or do some color mixing.

As you paint your sidewalk pictures you will notice that this homemade chalk paint dries very quickly – but washes off with ease!

I love the brilliant colors of this homemade sidewalk paint. Vibrant colors everywhere!

Step 3

Fizzing Sidewalk Paint 3
You can make a rainbow with this sidewalk paint.

Now for the fun!   You can put away your paint brush…

Spray the paint with a bottle of vinegar and watch the fizz appear in your desired color chalk paint.

Our Experience with Fizzing Sidewalk Paint

To say this activity was a hit is an understatement.   They are thrilled.  The prep was surprisingly easy and we made more than one batch.

And clean up was a bucketful breeze.  There is a bit of a mess, but it can be washed away easily with the pour of water making it washable paint!

Ways to Extend Learning Through Play

Want to add more “learning to this activity?  

Talk about the reaction between acids and base chemicals.   This is a fun way to incorporate chemistry into your preschoolers life (or just enjoy the fizz).

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If you make fizzing sidewalk paint, tell me about it!

Fizzing Sidewalk Paint Recipe for Kids

Fizzing Sidewalk Paint Recipe for Kids

Make this easy fizzing sidewalk paint to make beautiful chalk pictures! This fun sidewalk chalk paint activity is great for kids of all ages and budget-friendly.

Materials

  • A container of baking soda – we used an 8 oz box
  • 1/2 cup of cornstarch
  • Warm (almost hot) Water
  • Food coloring
  • Vinegar

Instructions

  1. Mix the dry ingredients and then add water, stirring until it’s not too thick.  I think we used about a cup.    
  2. Spray the paint with a bottle of vinegar and watch the fizz appear.

More Sidewalk Chalk Paint & Outdoor Fun from Kids Activities Blog

How did your fizzing sidewalk paint turn out? Did the kids have a really good time playing outside?



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63 Comments

    1. What a fun idea! The downside is that it is something that can’t be cleaned up off the sidewalk, but if you used something fine that didn’t need to be picked up afterward, I bet it would work.

  1. Can anyone advise on clean up? I’m concerned about the food coloring… Will it stain surfaces like cement driveways, or tile grout? I know that baking soda and vinegar are a classic cleaning combination, so its just the food coloring that worries me… anyone have any experience to share? 🙂

  2. Can I make the paint in advance or does it need to be used right away? If so, how long does it last? Thank you!

  3. Hi, just love this idea! Could you tell me the measurements for the UK – ie. not sure of ‘container’ of baking soda. Thanks very much! (so great to find a creative mum’s website for the UK so can easily get hold of things suggested!)

  4. Nice, I’ll also try to make learn my kids about chemistry. It is a good activity but should be done under guidance.

  5. what is the shelf life of this stuff? I’m thinking of gifting it for kids of mommy friends for christmas and I want to make sure they will be able to use it!

    Thanks!!

  6. Just did this with my 5 and 2 year olds and it was fun. I forgot that I used 1/2 the baking soda, so it was too runny and didn’t fizz all that much, but next time I’ll just make it stronger. They still enjoyed painting and I made up for the somewhat-low-fizz factor by making a ‘volcano’ using my salad dressing mixing bottle (narrow neck) and red and yellow food colouring with LOTS of baking soda. They loved the ‘volcano’. Thanks for the great idea!