Elephant Toothpaste!

We have been studying physical and chemical changes in science class and last week we made elephant toothpaste! Ask your student if this creates a chemical or physical change (correct answer: chemical change). We had lots of fun and lots of "oohs and ahhs!"  It is easy to make at home:

Elephant Toothpaste

1/2 cup hydrogen peroxide (stronger than 3% is suppose to give a big reaction, but we liked the 3% peroxide the best...that's what you buy in any store)
1 T dry yeast
3 T warm water
1 squirt liquid dish soap
food coloring if desired

Mix water and yeast in small container and set aside.  In soda bottle pour the peroxide, detergent, and a few drops of food coloring.

Pour in your yeast mixture and look for a great change!
Now, go brush an elephant's teeth!!! :)

This is easy and lots of fun. It is also very easy to clean up!