Camryn was our Star Scientist this week. She read a really cool flip book. She and her mother, Mrs. Martindale showed us how to make
Elephant Toothpaste. We learned about variables in an experiement and saw an example of an exothermic chemical reaction. Not only does this create toothpaste fit for your pet elephant, it creates
heat to keep you warm in these cold winter months!! Read below for direction on how to do this at home.
- 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!
She also created and presented a power point presentation so that we could get to know her better. Click here to view
Camryn's All About Me Presentation.
Enjoy the pictures!
