Watermelon Volcano - Baking Soda and Vinegar Science Experiment
Make a Watermelon Volcano Baking Soda and Vinegar Science Experiment out of a small watermelon. This easy experiment can be made at home with a few simple ingredients you already have in your kitchen. This science lesson is a fun summer activity for kids and is very inexpensive. So next time you’re at the grocery store, grab a small size watermelon to try this fun watermelon volcano science project.
To make the Watermelon Volcano Baking Soda and Vinegar Science Experiment, we’re using simple baking soda and vinegar science.
Baking soda science experiments are so easy - in fact you can make them in a variety of fun vessels including plastic bottles, pumpkins, apples, peppers, and watermelons!
The first step is to download and print out the science experiment worksheet from the free resource library. Your child can use this worksheet to record their observations while you make the watermelon volcano.
Watermelon Volcano Baking Soda and Vinegar Science Experiment TUTORIAL:
STEP ONE: PREPARE THE WATERMELON
Start by cutting a small hole on the top of the watermelon just like you would when carving a pumpkin. This is where the volcano eruption will ooze out of.
Next, you can scoop out the watermelon fruit inside using a melon baller, spoon or ice cream scoop. My daughter thoroughly enjoyed this part of the activity so make sure you get your kids involved in the scooping.
WATERMELON TIP: To keep your watermelon steady you can add it to a bowl. This worked out really well for us.
Once you have all your watermelon out, the inside will be hollow and you’ll have a bowl full of fruit to eat while you watch the science experiment erupt!
WATERMELON VOLCANO SUPPLIES:
To make the science experiment, you’ll need a few simple ingredients that you probably already have in your kitchen:
1/2 cup baking soda
1-2 Tbsp dish soap
1-2 cups vinegar
Science Experiment worksheet from my free resource library
MAKE YOUR WATERMELON VOLCANO IN MINUTES!
Now let’s start the experiment!
First, you need to add the baking soda into the watermelon. This might be a little tricky if you cut a small hole. I used a funnel for this so I didn’t spill baking soda everywhere.
Next, add 1-2 Tbsp of dish soap. This will create a fun bubbly effect when the volcano erupts.
Okay, here comes the fun part. Let’s make the watermelon volcano erupt!!
Now it’s time to add the vinegar. You don’t need to add it all. Just a bit (maybe 1/4 cup to start). You’ll see it start to bubble right away. It’ll start brewing and bubbling and will eventually flow out the top of the watermelon.
Once the volcano eruption ends, you can do it again by adding more vinegar.
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SO WHAT’S HAPPENING HERE? THE SCIENCE BEHIND THE WATERMELON VOLCANO SCIENCE ACTIVITY:
The volcano eruption is created by a chemical reaction between a base and acid. First, the base, which is baking soda, is added to the volcano. Next, the acid, which is the vinegar is added. When they combine, they create the chemical reaction and produce the fizzing gas of carbon dioxide. The dish soap adds extra bubbles and froth to really make the volcano experiment flow!
While all of this is happening, ask your kids lots of questions during the process: What do they think is going on? What do they see? What do they think will happen if they add more vinegar?
This Watermelon Volcano Baking Soda and Vinegar Science Experiment is so much fun for the entire family. It would even be easy to bring along to a summer picnic! It’s the perfect science experiment to do outdoors. All you need is a small watermelon, baking soda, vinegar and some dish soap. Add the baking soda and dish soap first. Then add the vinegar and watch your watermelon science experiment erupt! You’ll have everyone enjoying this easy science.
I hope you enjoyed learning how to make this homemade watermelon volcano science activity for kids! If you make one of these, please do email me — I love to see your science experiments! And, as always, let me know if you have any questions.