Developing an Early Love of Science One Experiment at a Time

In this DIY fire extinguisher experiment kids mix two simple kitchen ingredients together to make a small flame go out. This is a fast science experiment and an impressive kitchen science experiment that will not be forgotten!
In this DIY fire extinguisher experiment kids learn how to make a fire extinguisher with baking soda and vinegar. Unique and fun kitchen science experiment!

Why does a candle go out when you blow on it?

One of the possible explanations is that when you exhale you breathe out a lot of carbon dioxide. That carbon dioxide displaces the oxygen around the fire, making it go out. Some fire extinguishers even use carbon dioxide (among other chemicals) to put out larger fires.

In this experiment you will learn how to make a fire extinguisher with baking soda and vinegar. The reaction of these two materials produces carbon dioxide, which you can see bubbling up through the solution. Carbon dioxide is heavier than air so it drops right on top of our candle to put the flame out! Pretty cool!

DIY Fire Extinguisher experiment. Make a baking soda fire extinguisher using vinegar.

DIY Fire Extinguisher Experiment

*This post contains affiliate links. Please see our disclosure policy.

We headed to the kitchen to gather the following supplies:
  • A sturdy bottle (preferably glass)
  • A funnel
  • A small candle
  • Matches
  • 5 Tbsp vinegar
  • 1/2 Tbsp baking soda
Once we had our supplies ready we followed these instructions to put out a flame using a simple chemical reaction:
  • Have an adult light the candle.
  • Add vinegar to the bottle.
  • Using a funnel, quickly drop the baking soda into the bottle.
  • Being careful not to spill the mixture, hold the bottle at an angle so the carbon dioxide can flow out onto the fire.
  • Notice how carbon dioxide is heavier than air and drops right onto the flame to extinguish it!


More Hands-On Fun for Kids –>

Calling all LEGO lovers! Put your engineering skills to work, build a LEGO maze, and get your hands on over 100 ways to learn and play with LEGO bricks!
Make naked eggs and see how they change in different liquids. The results may surprise you! The naked egg is a fantastic first lesson in biology for kids.
Make your own colorful rainbow paper with just three materials! Easy physics demonstration, art project, and science activity for kids of all ages.
Five super simple experiments for kids that each take five minutes or less to complete. These colorful and quick science experiments are perfect for kids of all ages and abilities! Includes no-prep printable science journal pages for kids to complete.

Receive a FREE Science Packet by Entering Your Email Address Below



STEM Saturday

Learning About the Human Heart from Suzy Homeschooler
Fizzy Heart Valentine Science from Frogs Snails and Puppy Dog Tails
Chocolate Science Reversible Change Science from Little Bins for Little Hands
Engineering for Kids | Peeps Catapult from Lemon Lime Adventures

By |2018-09-14T09:12:31+00:00September 13th, 2018|Five Minute Science, Kitchen Science, Science, STEM Saturday|5 Comments

5 Comments

  1. Christy McGuire February 9, 2015 at 10:03 pm - Reply

    What a great way to teach fire safety!

    • Crystal February 11, 2015 at 4:48 pm - Reply

      Thanks! It’s pretty fun 🙂

  2. Tim February 28, 2015 at 6:19 am - Reply

    How neat! My kids will love this. Thanks for sharing!

    Tim @ Families Again

  3. Tom Fletcher December 7, 2015 at 9:00 am - Reply

    Looks like a fun way of getting across how a fire extinguisher works. Thanks for posting, Tom Fletcher, Director, http://www.jacksonfirecambridge.co.uk

Leave A Comment