You’ve probably already tried the classic volcano experiment for kids, but during the fall, we like to transform our science classroom into a fall haven filled with fall science experiments and fall STEM activities.
This time, we decided to transform the classic baking soda and vinegar volcano into a pumpkin volcano! The kids were thrilled with the science experiment, and everyone had a blasts learning about chemical reactions and pumpkins.
Keep reading to learn how to make your own pumpkin volcano.
If you like this project, check out our complete list of pumpkin science experiments!
NGSS STANDARD APPLICATION
This experiment can be used to meet the following NGSS standards:
NGSS standard 5-PS1-4
Conduct an investigation to determine whether the mixing of two or more substances results in new substances
NGSS standard MS-PS1-2
Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
NGSS standard MS PS1.B
Substances react chemically in characteristic ways. In a chemical process, the atoms that make up the original substances are regrouped into different molecules, and these new substances have different properties from those of the reactants.
NGSS standard K-2
Plan and conduct an investigation collaboratively to produce data to serve as the basis for evidence to answer a question. (NGSS standard 2-PS1-1)
Analyze data from tests of an object or tool to determine if it works as intended. (NGSS standard 2-PS1-2)
Make observations (firsthand or from media) to construct an evidence-based account for natural phenomena. (NGSS standard 2-PS1-3)
Construct an argument with evidence to support a claim. (NGSS standard 2-PS1-4)
HOW TO MAKE YOUR OWN PUMPKIN VOLCANO
The classic volcano experiment for kids becomes new again when you put it inside a pumpkin! Here is how you can make your own pumpkin volcano.
Use our science experiment worksheet to record your results from this experiment.
Follow along with these instructions to make your own pumpkin volcano!
WHAT YOU NEED TO MAKE A PUMPKING VOLCANO
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SETTING UP YOUR VOLCANO EXPERIMENT FOR KIDS
You’ll want to open up your pumpkin in advance and remove the guts if you’re using a real pumpkin. If not, you may want to go ahead and cut the top off just so you don’t have to have knives in class.
DOING THE PUMPKIN SCIENCE VOLCANO EXPERIMENT
Fill the inside of the pumpkin with vinegar. Place the pumpkin on a tray or plate.
Dye the inside of the pumpkin red with the food coloring.
Add a few drops of dish soap.
Add baking soda to the pumpkin and watch the reaction happen!
Keep adding baking soda until the bubbling stops.
VOLCANO PUMPKIN SCIENCE
The classic baking soda and vinegar reaction works because baking soda is a base and vinegar is an acid. When these two substances mix, they create a chemical reaction that releases carbon dioxide gas. This is a form of endothermic reaction, because it uses more energy than it produces.
The carbon dioxide gas gets trapped in the remaining water and dish soap, making foamy bubbles that are fun to watch for kids.
When the pH of the mixture has stabilized and the conversion is complete, the mixture stops reacting and the bubbles deflate.
Adding the dish soap makes the reaction last longer, because the soap bubbles hold air longer than the liquid vinegar alone.
MORE FALL SCIENCE AND STEM
If you love this experiment, you’ll love the fall STEM challenge calendar! Click the image below to download the free printable calendar.