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Hands-On Learning Science STEM

Fire Extinguisher Science Experiment for Kids

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Today I want to show you two really simple fire extinguisher science experiments for kids.  These experiments need just a few basic supplies.  They are really engaging and interesting! You can use them to teach kids the properties of fire and ways to safely extinguish them.

fire extinguisher science experiment for kids

This week I am working on content about community helpers.  This science experiment is perfect when teaching a lesson about firefighters to kids.  It also would be great for a fire safety lesson.

My kids loved these fire experiments.  We did each of them four or five times so they could watch them again and again!

 

Watch Them Here:

 

Fire Extinguisher Experiment #1: Candle Under a Jar

candle fire experiment

This first experiment is so simple it doesn’t really feel like a big deal. However, kids will be surprised!  All you need is a small tea light candle, some matches and a jar or glass larger than the candle.

candle under jar fire experiment

Light the candle. Place the jar over the candle and see how long it takes for the candle to blow out.

candle under jar burning out- science experiment

The Science Behind it:

When you put a candle under a jar, there will be a limited amount of oxygen under that jar.  Fire burns on oxygen and when it runs out, it will not burn any longer.  The flame will go out.

fire experiments for kids

 

Experiment #2: DIY Fire Extinguisher

 

There are several types of fire extinguishers, just as there are different types of fires. Each of them put out fires in different ways.  Some of them smother the fire. Some of them  One way a fire can be put out is with carbon dioxide.  This  type is usually used with electrical fires.  They release carbon dioxide into the air diluting the oxygen and causing the fire to burn out.

This experiment uses carbon dioxide created from the chemical reaction between baking soda and vinegar to put out a fire.

How to Make the DIY Fire Extinguisher:

fire science for kids

For this experiment, you will need some small tea light candles, baking soda, vinegar, matches, a funnel and a bottle or pitcher with a lid.

fire science

In your bottle, pour in 3 tablespoons of baking soda.  Next, pour in about 1/2 cup of white vinegar. Quickly seal the top of your bottle to seal in the gas created from the reaction.

Light your candles.

homemade fire extinguisher experiment

Allow the bubbling from the reaction to stop.  Once it is done bubbling, tip the bottle over and open it while facing the lit candles. It will release the carbon dioxide gas and burn the candles right out!

diy fire extinguisher science experiment

This experiment feels a bit like a magic trick!

The Science Behind it:

Just like the previous experiment, when there is decreased oxygen, the fire will go out.  With this experiment, the carbon dioxide is released pushing away the oxygen and quickly putting out the flames on the candles.

 

See More Fun Science Experiments for Kids:

100+ Easy and FUN Science Project Ideas for Kids

See Also our Rising Tide Experiment with Fire!

 

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2 Comments

« Community Helpers Printables for Reading and Writing
Post Office Activities for Kids »

Comments

  1. Nancy Perez says

    May 19, 2020 at 9:48 am

    I teach science and these are great experiments for light and science. Thank you!

    Reply
    • Karyn Tripp says

      May 19, 2020 at 1:08 pm

      So glad to hear! Thanks for your comment!

      Reply

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Hi! I'm Karyn.
I am a former teacher turned homeschool mom of four kids. I LOVE teaching! I believe learning should be enjoyable and engaging. My goal is to ease the burdens of educators by offering memorable learning activities.
Questions? Contact me here: karyn@teachbesideme.com
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