baking soda vinegar

Dragon Vinegar Baking Soda Science Experiment – Foam Instead of Fire

No matter how many times we’ve combined these two ingredients, this dragon vinegar baking soda science experiment was still exciting. Be prepared though, once isn’t enough!


The kids wanted to do some dragon science, but what to do? We needed an idea. The thinking process for some dragon science fun was long and winding. There were big jumps of imagination instead of logic but that’s part of thinking too. Kids know dragons breathe fire but we didn’t want to use real fire for science. Hmmm. The kids said dragons are like dinosaurs, right? Maybe we could do dinosaur science. Dinosaurs aren’t alive anymore and some scientists think it’s because of volcanoes not meteorites. A volcano has fire like a  dragon, so maybe we could do that? A dragon vinegar baking soda science experiment?

Making a volcano with baking soda and vinegar is pretty standard but we didn’t know how to make a dragon volcano. After some google searching, we discovered a foaming dragon science experiment on The Joys of Boys. We all agreed this was a great idea and could hardly wait to make our own.


To make a dragon volcano is simple. Start with an empty water bottle. Cut a tail and 4 paws out of a foam sheet or something else green and plastic. In the sewing drawer, we had some vinyl left-overs from a patio cushion that would do and a tube of googly eyes. Tape the tail, eyes, and paws to the bottle. A big bottle will need more vinegar than a small bottle. Fill the bottle about half full of vinegar and place on a pan to catch drips. Squirt in some liquid dish soap. Add a couple drops of food coloring. We used red and yellow to make orange. Since we hadn’t mixed in the dish soap, the food colors made swirls in the bottle. It was really interesting to watch the red spread out in the vinegar solution. *At this point, the kids reminded me I’d forgot to tape on the dragon’s tail and paws. We had to pause for that.

Now, for the fun and exciting part. With the vinegar, soap, and color in the bottle, what do you think will happen when we add some baking soda? Will it bubble right out of the bottle? The reaction starts as soon as a little bit of soda hits the vinegar. It only needed a small scoop of baking soda for orange foam to start bubbling up, out, over, and all down the side of our dragon. This dragon was breathing hard and it was orange like fire. It even worked again with a second scoop of baking soda.

Good oldstand-bys. This dragon vinegar baking soda science experiment was so much fun. The kids proved it works once again, were engaged, had lots to talk about and certainly lots to think about. Could this be a play-of-the-day for your child?

Pumpcano: Pumpkin Baking Soda Vinegar Volcano

Not only does this pumpkin baking soda vinegar volcano create a gas (carbon dioxide), it is a gas, as in lots of fun. It’s a great science experiment too.

pumpkin volcano science

Although baking soda and vinegar are inexpensive, the bigger the pumpkin the more of it you will need. Smaller pumpkins are easier for the bubbles to fizz right over the top and all down the sides. The first thing you and your child need to do for this activity is to slice off the top of the pumpkin. Then, hands need to take out the insides. This can be pretty gooey. Save the seeds and strings from inside the pumpkin in a plastic bag or small container for another activity. Once the pumpkin is ready, put it in a big flat dish to catch the ‘lava’ so it doesn’t go all over. You may want to put some newspaper or an old towel on the table, counter, or floor.

pumpkin volcano science

Depending on the size of the pumpkin at your house, the soda-vinegar solution can be made in a plastic container inside the pumpkin or right in the pumpkin. Ours was small enough to go in the pumpkin. (We used ours earlier to make a dip for snack.) Little Sister poured in about a cup of warm water. Next, she squirted in one squeeze of liquid dish soap. Using a tablespoon, she scooped in 2 big spoons of baking soda. I poured out a quarter cup of vinegar into a measuring cup and she dumped it into the volcano. Right away it started to fizz and bubble and while we watched the foam grew and grew. The pumpkin volcano exploded into white lava.

pumpkin volcano science

Of course, once wasn’t enough, so the pumpkin baking soda vinegar volcano was recharged. She tried squirting the vinegar into the pumpkin with eye droppers. She put her hands in the pumpkin and mixed everything all around and likely adding to the sensory stimulation.

pumpkin volcano science

Science experiments usually start with a prediction about what will happen. Little Sister has played with vinegar and baking soda before so expected it would fizz up. To introduce a bit of uncertainty, I asked her if same thing would really happen again. She thought it might go all over the kitchen. Thankfully, that didn’t happen. But it was fun to try. Is there a pumpkin scientist at your house?

Play – Learn with Bubbles #6: Baking Soda and Vinegar Science Fun

Bubble, Bubble, Fizz, and Pop

Soap and water aren’t the only ingredients for bubbles. Another way is baking soda and vinegar science fun. Just a bit of makes lots of fun and learning.

play with baking soda and vinegarScoop some baking soda into a small bowl, fairly flat container, or even a clear plastic wine glass. Set this in another pan to catch the drips. Pour some vinegar into a second dish. Kids can use a spoon or an eyedropper to put a little vinegar onto the soda. They love to do this over and over again and watch as bubbles form and pop, getting high enough sometimes to spill over the edges. The bubbles hiss and pop adding exciting sound effects.

Soap bubbles shimmer with color. To a few containers of vinegar, add several drops of food coloring, one color for each bowl. Before squirting on the vinegar, ask kids what they think might happen. Will the bubbles be different colors? What will happen after the bubbles pop? Kids can then try adding the colored vinegar to the baking soda. The colors left behind seem quite vivid, depending on how many drops were in the vinegar.

science color fizzy fun baking soda vinegar

Like blowing bubbles, this is a fun activity for kids of any age. There are some new words like fizz, hiss, and reaction. While young children are satisfied with the results, older kids might ask questions. Why did it do that? Where did the bubbles come from? Will it always do this? Kids are natural scientists. The explore and ask questions. All. The. Time.

Besides new words, questions, and explanations, there is also a sensory aspect. The soda feels very slippery on hands and fingers. The noises are very soft but exciting just the same and visually, the bubbles are fast and active. Vinegar has a bit of a smell, not particularly pleasant. The mixture isn’t at all tasty so if kids try it once is usually enough.

Is this variation of a bubble activity, baking soda and vinegar science fun, something your child has tried?

Kids Play with Anything #6: Play with Baking Soda and Vinegar

Here’s a secret formula proving kids play with anything: Play with Baking Soda and Vinegar = Explosions of Fun. Sometimes called how to make volcanos. Baking soda and vinegar cannot be considered toys but they combine for some amazing play. They are inexpensive and affordable, but with all these ideas, you might need the extra … Continue reading Kids Play with Anything #6: Play with Baking Soda and Vinegar

Star Wars Activities for Kids: Exploding Stars

Star Wars activities for kids do not need expensive toys or high-tech materials. Your kitchen cupboards likely have some items you can use for some science fun about stars. Yesterday, we looked at some pictures on the computer about stars and star dust. In one, there were gazillions of little white specks covering a dark … Continue reading Star Wars Activities for Kids: Exploding Stars

Paint Fireworks Craft for New Year’s Eve

Staying up for fireworks can be hard for kids—and adults. Instead, kids can enjoy this paint fireworks craft in all their favorite colors before bedtime. Besides paint, use a couple of toilet paper rolls. Because the rolls are harder to cut than thin paper, adult hands need to do the scissor part. Cut many narrow … Continue reading Paint Fireworks Craft for New Year’s Eve

October Alphabet: W is for Wands & Science Magic for Kids

October is a fun time of the year for science magic for kids. There are some easy and simple science tricks that kids can do with ordinary household items. With a wave of a wand or a magic spell, wizards can make things float and sink. Partially fill a large bowl or container that you … Continue reading October Alphabet: W is for Wands & Science Magic for Kids

Colors of Childhood: Color and Fizzy Science Fun

Colors can be used in so many different play activities, not just art. A few drops of food coloring and water made for some color and fizzy science fun. Set out some small containers with a bit of vinegar in each, and add a few drops of food coloring. The darker the solution the easier … Continue reading Colors of Childhood: Color and Fizzy Science Fun