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.

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

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

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

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

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

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!

More Sidewalk Chalk Paint & Outdoor Fun from Kids Activities Blog

• Let’s make homemade sidewalk chalk.
• This sidewalk chalk board game is so much fun to play outside.
• Have you ever made homemade bathtub paint?
• These outdoor games for kids will have everyone breathing fresh air and giggling.
• Let’s make edible paint.
• This chalk paint recipe is so much fun!
• These rock painting ideas are so fun to make and hide for others.
• Outdoor art is way more fun than indoor art!
• Let’s draw a chalk race track for kids.
• Sidewalk chalk art ideas for kids.
• How to make a neighborhood chalk walk.
• Need more homemade paint ideas for kids? We have ’em!

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