We do love all things science and making things erupt around here! Stuff like this makes learning so easy. When fall arrives, pumpkins make the perfect vessel for cool baking soda science experiments. It all began three years ago with the famous pumpkin-cano! This year we also tested out mini pumpkin volcanos. Now, we can check this cool ghost pumpkin science eruption off our list.

HALLOWEEN GHOST PUMPKIN SCIENCE ERUPTION

COUNTDOWN TO HALLOWEEN: 31 Days of Halloween STEM

We have a fun lineup of ideas for you this fall as we approach Halloween! 31 ideas for cool STEM activities gives you tons of ways to include a bit of STEM into a fun holiday. In fact, Holiday STEM is our favorite.

WHAT IS STEM?

Science, technology, engineering, art, and math to be exact!  Make sure to add our ghost pumpkin science experiment to your list this season. This cool baking soda science eruption makes a great family Halloween science activity. Super simple, our ghost pumpkin science uses ordinary kitchen ingredients.

SUPPLIES

Ghost Pumpkin (white pumpkin) or an Orange Pumpkin

Baking Soda

Vinegar

Dish Soap {optional but will provide a more dramatic visual affect of eruption}

Food Coloring and Glitter {Optional but cool}

Containers, Basters, Measure Cups, Spoons, Towels

SET UP

We have managed to try some awesome science and STEM ideas with white pumpkins, see the collection here.

Gather your supplies. I like to use some sort of tray or storage container lid with high sides to catch the mess. Keep some towels handy just in case. You might want to try out our Ghost Pumpkin Geo Board first!

Carve your pumpkin {adults only!}. I did not completely clean ours out, but you can and make a cool pumpkin squish bag too.

Pour vinegar into a bowl and have a baster or scoop ready. You can also set up a Pumpkin Investigation Tray with the insides of the pumpkin!

*** If you don’t want to carve a face, just remove the top. You will still have a cool pumpkin volcano***

Add a few scoops of baking soda.

Next add glitter and food coloring if desired

Then add a few drops of dish soap if desired

Finally, add vinegar and get ready to say WOW!

Repeat process until you run out of baking soda or vinegar. 

WHAT’S THE SCIENCE?

This ghost pumpkin science eruption is called a chemical reaction. When the baking soda {base} and vinegar {acid} mix, they react. The reaction is a gas called carbon dioxide. Therefore,  you can see the bubbling fizzing action the gas produces.

The addition of dish soap creates suds that make for a more dramatic appearance. Try it both ways. Without the dish soap, you can observe the chemical reaction more closely. You can hear, see, and feel the bubbling, fizzing action.

YOU MAY ALSO LIKE: Bubbling Brew Experiment

What happens when you add extra soap? You get an extra bubbly ghost pumpkin science eruption.

Kids will ove to do this simple ghost pumpkin science experiment over and over again since it’s fascinating to watch. We have tons of neat pumpkin science activities and challenges to explore this season.

If it’s nice outside, why not try it outdoors. Finally, when you are all done, wash the mess down the sink.

START THE SEASON OFF WITH GHOST PUMPKIN SCIENCE!

Check out our 31 Days of Halloween Countdown for a fun filled holiday season.

Check out some more fun ways to explore STEM with pumpkins and books!

Pumpkin Science Ideas

 Glow in the Dark Layered Liquids Babble Dabble Do

 Shrunken Apple Heads Pink Stripey Socks

 Halloween Creepy Crawly Search and Find Activity One Time Through