Thursday, December 22, 2011

Project of the Week: Fantastic Foamy Fountain

  • A clean 16 ounce plastic soda bottle
  • 1/2 cup 20-volume hydrogen peroxide liquid (20-volume is a 6% solution,
  •  ask an adult to get this from a beauty supply store or hair salon)
  • 1 Tablespoon (one packet) of dry yeast
  • 3 Tablespoons of warm water
  • Liquid dish washing soap
  • Food coloring
  • Small cup
  • Safety goggles

NOTE: As you can see from the picture, foam will overflow from the bottle, 

so be sure to do this experiment on a washable surface, or place the bottle on a tray.
1. Hydrogen peroxide can irritate skin and eyes, so put on those safety 
goggles and ask an adult to carefully pour the hydrogen peroxide into the bottle.

2. Add 8 drops of your favorite food coloring into the bottle.

3. Add about 1 tablespoon of liquid dish soap into the bottle and swish the bottle 

around a bit to mix it.

4. In a separate small cup, combine the warm water and the yeast together and mix 

for about 30 seconds.
5. Now the adventure starts! Pour the yeast water mixture into the bottle (a funnel 
helps here) and watch the foaminess begin!

Foam is awesome! The foam you made is special because each tiny foam bubble is filled 

with oxygen. The yeast acted as a catalyst (a helper) to remove the oxygen from the hydrogen 
peroxide. Since it did this very fast, it created lots and lots of bubbles. Did you notice 
the bottle got warm. Your experiment created a reaction called an Exothermic Reaction - that 
means it not only created foam, it created heat! The foam produced is just water, soap, 
and oxygen so you can clean it up with a sponge and pour any extra liquid left in the bottle down the drain.
This experiment is sometimes called "Elephant's Toothpaste" because it looks like toothpaste 
coming out of a tube, but don't get the foam in your mouth!

The project above is a DEMONSTRATION. To make it a true experiment, you can 

try to answer these questions:
1. Does the amount of yeast change the amount of foam produced?
2. Does the experiment work as well if you add the dry yeast without mixing it with water?
3. Does the size of the bottle affect the amount of foam produced

Daddy had to host a science night for his school and he had to do his own booth with science experiments and a basket to give away.  The school is not safe enough for the rest of us to go to.  So, Daddy did all of his experiments with us at home!

Lil Bro helped Daddy, too!

Here is the science raffle basket that Daddy and Mommy made.  We went as a family to buy the supplies. It is a take home science kit that is full of super fun experiments.  All of the supplies are in each bag for the experiment!  We had to buy scissors and crayons for this basket because the student who wins this might not have those items at home because they have very little.  
We called the our Blessing basket.  We made it so fun!

 Watch out....My Daddy has his eye on you!
We celebrated that Daddy finished this semester!  Woohoo! Way to go Daddy!

We have the best Daddy in the WORLD!

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