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Friends Art Lab / Blog / Sizzling Science Pumpkins

Sizzling Science Pumpkins

By Kristian Klebofski   Published: October 28, 2022    Updated: October 28, 2022

Try one of the best Fall activities for kids by baking soda & vinegar INSIDE of pumpkins! Easy to set up and get started.

A close up shot of bubbles pouring out and over a pumpkin with the top cut off, demonstrating one of the best Fall activities for kids!
Table of Contents:
  1. Baking soda & vinegar pumpkins = one of the best Fall activities for kids!
  2. Supplies
  3. Set up in a snap
  4. What else reacts with baking soda besides vinegar?
  5. Ask juicy questions like this to deepen the learning and fun!
  6. Follow-up Fall activities for kids to try, too
  7. Fall activities for kids just got a whole lot more fun!

Baking soda & vinegar pumpkins = one of the best Fall activities for kids!

Do you have kids who go crazy for baking soda + vinegar experiments?

Do you count down the days until fall so that you can do every pumpkin activity known to mankind?

Do you love activities that are hands-on and perfect for independent play?

If you answered “Yes!” to any of the above, then baking soda & vinegar pumpkins are for you!

Supplies

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  • Pumpkin with the top cut off (cutting for adults to do)
  • Leave all the “guts” and seeds in it!
  • Baking soda
  • Vinegar
  • Shallow bowls (ours are discontinued, but this colorful 10-pack of bowls looks great!)
  • Spoons
  • Eye droppers
  • Coloring (optional, but adds a ton of extra fun)
  • Large tray
Several kids' hands mixing baking soda, vinegar, and colors in a cut open pumpkin in a large metal tray. The tray is filled with colorful vinegar and pumpkin seeds, truly one of the best activities for kids!

Set up in a snap

It’s just about taking your materials and setting them up so they’re accessible for everyone! We like doing these kinds of activities on low tables so that the kids can see inside of the pumpkin as it’s fizzing.

  1. Place the pumpkin in the center of a large tray.
  2. Set bowls of baking soda around the table. Add in spoons.
  3. If using coloring, add it to the vinegar and place those bowls around the table, too. Add in spoons or eyedroppers.
  4. Let the littles mix and match!

Note: Sometimes, we add a few cups of baking soda into the pumpkin to start to give it some height. Our students love seeing it ooze out of the side of the pumpkin, and a bit of vinegar to begin helps to achieve this.

A close up shot of a child's hand holding an eye dropped in pumpkin with the top cut off filled with black vinegar and floating pumpkin seeds, demonstrating one of the best Fall activities for kids!

Other fantastic Fall activities to try:

  • Pumpkin Oobleck Sensory Bin – Busy Toddler
  • Fall Nature Stamps -hello, Wonderful
  • Giant Fall Coloring Banner – Friends Art Lab

What else reacts with baking soda besides vinegar?

Lemon juice! We LOVE making lemon volcanoes, and you could easily add fresh lemons cut in half instead of or in addition to the vinegar.

If you are sensitive to the smell of vinegar, do this project outside. Personally, the scent of vinegar makes me 🤢, but projects like this don’t bother me at all when we are outside.

Children working together on adding the baking soda and colorful vinegar to the inside of a pumpkin,

Ask juicy questions like this to deepen the learning and fun!

When the kids are doing their thing exploring and experimenting, adults can engage them in open-ended questions to facilitate discussion and deepen the play.

Before the activity:

  • How does the pumpkin smell?
  • What is inside the pumpkin? How does it feel?
  • Why do pumpkins have seeds?
  • What do you think will happen when the baking soda and vinegar get mixed in the pumpkin?

During the activity:

  • What sounds do you hear?
  • How does it smell?
  • What happens if you use a LOT of vinegar on a little bit of baking soda?
  • Will this make the pumpkin explode?
A close up of a pumpkin cut in half with black bubbles oozing over the sides, one of the best Fall activities for kids!

Follow-up Fall activities for kids to try, too

Baking soda and vinegar trays: Spread a thin layer of baking soda on the bottom of a shallow tray. Invite your child to use eye droppers to add colorful vinegar on top.

Grow your own pumpkins: Remove some seeds and see if you can grow your own pumpkin plants!

Make your own pumpkin seeds to eat: There are a million recipes online for making sweet or savory pumpkin seeds. Scoop some seeds out before you begin and bake them up for a yummy, healthy snack.

Kids working together by mixing the ingredients over a large metal baking sheet.

Fall activities for kids just got a whole lot more fun!

Your kids are going to fall in love with this activity!

How many pumpkins are you going to make?

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Kristian

Hi, I’m Kristian!

I love all things early childhood. Having earned a master's degree in education, I love sharing my passion and knowledge both as a classroom preschool teacher and college professor. Friends Art Lab is my heart and I'm excited to share with you! LEARN MORE

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