Tag Archives: hydrogen peroxide

Patriotic Monster Foam – Exploding Hydrogen Peroxide

Since fireworks are no longer an option, you have to find some way to occupy your time on the 4th of July. I turned to my demo team and brainstormed anything we could do in the backyard at 9News for the celebration. Here’s the classic Elephant’s Toothpaste demo using hydrogen peroxide and potassium iodide as the catalyst to make a red, white and blue patriotic eruption that shot up about 20 feet in the air.

We also learned that Oxiclean is the magic cleaner that will remove iodine stains from the beautifully pressed white shirt of a news anchor (thanks to Mark Koebrich for being the best Science Monday co-host in the world!)

UPDATED JULY 5, 2011 – Mark Koebrich asked photo journalist Brian Willie to share some behind-the-scenes video of this amazing eruption. Yes, everyone was wearing safety glasses. It’s important to note that the hydrogen peroxide completely decomposed into water and oxygen. The brownish yellow stains you see are from the iodine in the catalyst (potassium iodide). And the secret to removing those stains in an instant… OxiClean!

 

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Spangler Uses Cool Science Demos at NAEYC Conference to Share His Passion for Teaching Science

Contributed by Guest Blogger, Nancy Leemer

I remember coming to the NAEYC Conference years ago and watching Steve Spangler present his hands-on science activities to a room of 50 or so early childhood educators, but those days are long gone. That intimate workshop experience in the past has given way to a ballroom packed with a few thousand teachers who are wondering what he’s going to do this time.

“I saw Steve last week on the Ellen Show and didn’t even know he was going to be at this conference,” said Shawna Dematre, a second year teacher from an early learning center outside of Nashville. “When I saw his name on the program, I wanted to come to the session to see how I can do more science experiments for my kids.”

When Steve hit the stage, the audience had already been treated to twenty minutes of simple science experiments and other video clips from Spangler’s website. Within five minutes from the start of the program, pieces of potatoes were already flying through the audience and he was setting up his main themes:

  • The difference between good teachers and great teachers is that the great ones know how to create unforgettable learning experiences.
  • Just because kids have “stuff” in their hands doesn’t mean that they’re doing science.
  • Throwing in a few science terms here or there doesn’t mean that you’re teaching science!
  • Children need the opportunity to wonder, discover and explore in an environment that challenges their inquisitive nature.
  • If it gets to the dinner table, you win!

If you’ve ever heard Steve speak at a conference, you know that he’s not a PowerPoint presenter. Instead, he uses lots of demos and props and stories to illustrate each of the points. I found myself getting so caught up in watching the science experiments that I had to quickly scribble notes as he transitioned to his next point. But my favorite idea was so simple, and it makes sense: If it gets to the dinner table, you win. He’s speaking to his earlier observation that there’s a difference between doing an activity and creating an experience. When teachers create experiences, kids will remember them and even share them (on their own!) at the dinner table. The whole thing comes full circle when the parents stop by and ask questions about something that happened in class like… Did you really float a bowling ball? or Why does my daughter want 10 boxes of cornstarch?

“I’m so honored that this many teachers would attend this session,” said Steve after an impromptu book signing session at the edge of the stage. “I’m never quite sure what to share because so many of these teachers have seen me speak in the past. I want to give them something new to try with their kids while at the same time addressing some of the bigger ideas of creating experiences that the children will never forget.”

Spangler shared stories about a kindergarten experience he had trying to push straws through potatoes. While it seems impossible, it’s actually quite easy if you know the secret: Put your thumb over the end of the straw to trap the air and to give the straw rigidity and strength. This simple experiment morphed into a larger scale potato “pusher” that launched a chunk of spud a few hundred feet to the back of the room. Again, it’s a story about creating experiences, which is something that Spangler does well, even with his audiences. Within just a few minutes of demonstrating his giant air bag activity, everyone in the audience (yes, everyone!) was doing the activity themselves. The room literally erupted into a giant science experiment.

As Spangler points out, “If you’re going to be a creator of experiences, you need to feel the excitement of being the recipient of an experience as well.”

During the remainder of the session, we were treated to the sounds of science as Steve showed us how to use an ordinary turkey baster or a saw from the hardware store to teach children about vibrations and sounds. While it wasn’t part of his original line-up of demos for the session, Steve shared the same science experiment he did on the Ellen DeGeneres Show just last week when he used a heavy gas to make her voice sound very low. The special gas called sulfur hexafluoride was donated by the props people at the Ellen Show to share at NAEYC.

One of the great take-away ideas for me was Steve’s suggestion of partnering with a chemistry club at the local high school or college. He reminded us that these people are eager to find an audience for their students to share cool science demonstrations that might otherwise be too expensive or complicated for an early childhood teacher to do themselves. Ultimately, it’s the children who benefit from experiencing the excitement of being a part of the demonstration. Exposing our young children to many different types of science is a method that I think really works. As an example of what a local chemistry club or traveling science group might do, Steve shared this quick experiment called “Monster Foam.”

[youtube]http://www.youtube.com/watch?v=qChq2-h3VNI[/youtube]

The event wrapped up with signature Steve Spangler experiment – his trash can smoke ring generator. Everyone learned how to take advantage of post-Halloween sales to find a simple smoke machine, cut the hole in the trash can, stretch the shower curtain (from the Holiday Inn – ha!), and blow out amazing smoke rings. His skill at knocking Styrofoam cups off the heads of audience members to the booming sounds of the William Tell Overture was the perfect, high-energy ending to an experience I’ll never forget.

The Secret to Releasing the Genie in the Bottle

The Genie in the Bottle experiment is a special effects secret used by the movie industry. It’s not really a secret, it’s science.

**This experiment is not intended to do at home. Your chemistry teacher is a great resource to demonstrate this reaction. The hydrogen peroxide used is 30% and can irritate the eyes and throat.

This experiment uses two compounds – hydrogen peroxide and manganese dioxide. The hydrogen peroxide is made up of water and oxygen (H2O2). The peroxide decomposes and releases the oxygen molecules as it breaks down. The manganese dioxide (MnO2) is used as a catalyst to tear apart the H2O2 molecules.

The secret to releasing the genie is to hang the manganese dioxide on a string above the hydrogen peroxide in a bottle. When the cork is pulled, the string drops into the liquid and starts the reaction. The reaction is gaseous oxygen propelling tiny water droplets which look like a genie escaping the bottle.

Heat is released during the reaction, making it an example of an exothermic reaction.