Flame Light Relight - Science Magic
Use carbon dioxide and oxygen gases to extinguish and ignite fire.
There's a lot of chemistry behind the simple lighting or extinguishing of a flame. Would you believe us if we told you that you could extinguish a flame just by placing it partway into a graduated cylinder? What if we told you that you could relight the fire without a match or lighter? Both propositions seem unlikely, if not downright impossible. With the Flame Light Relight experiment, however, you'll see how a few household items can mix together and create a fire-based experience you have to see to believe.
- Baking soda
- White vinegar
- Hydrogen peroxide
- Popsicle stick
- Two graduated cylinders
- (or similar containers)
- Measuring spoons
- Safety glasses
- Adult supervision
- Add 1 teaspoon of baking soda to two graduated cylinders.
- Add 1 teaspoon of yeast to both of the graduated cylinders.
- Shaken, spin, and twirl the graduated cylinders to mix up the baking soda and yeast combination.
- Add a generous splash of hydrogen peroxide to one of the graduated cylinders.
In the other graduated cylinder, pour in a generous amount of white vinegar.
The addition of hydrogen peroxide and vinegar to their respective cylinders creates a reaction with bubbling and fizzing in each of the cylinders. This is how you know you're on the right track.
- Use a lighter to ignite a popsicle stick. Make sure that you have a strong, consistent flame on the popsicle stick before continuing.
- Stick the lit end of the popsicle stick down into the graduated cylinder that contains vinegar. You don't need to touch the bubbles or liquid. The flame will extinguish.
- Now, take the still-smoking popsicle stick, placing and holding it in the cylinder that contains hydrogen peroxide. Again, no need to touch the bubbles or liquid in the cylinder. The ember where a flame once was will begin to glow more intensely as it stays in the cylinder until… the flame relights!
- Repeat placing the popsicle stick into the vinegar cylinder and the flame will once again extinguish. Replace the popsicle stick in the hydrogen peroxide cylinder and, once again, the flame is reignited.
How does it work?
December 4th, 2012
Click the thumbnail below to see the video.
Fun & Exciting experiment
Nicole L. - November 14, 2010
This was a great demo to show my class. They loved it.