Lava Lamp Reaction...

This reaction is so cool, you're Kid Scientists are going to want to do it over & over!

Ages: This is best for the Big Kid Scientists, though the Little Kids will enjoy watching the reaction

Materials: clean plastic water bottle with lid, vegetable oil, water, food color, Alka Seltzer tablet

Procedure:

* Fill the bottle about 3/4 full of vegetable oil.  (There isn't a specific measurement, but you'll want more oil than water)

* Fill the bottle with water, nearly to the top.

* This is cool...watch what happens to the oil and the water.

* Add about 10 drops of food coloring

* It's also pretty cool to watch what happens with the food color

* Divide the Alka-Seltzer tablet into 8 or 9 small pieces

* Drop the Alka Seltzer pieces into the bottle, one at a time.  Watch the reaction!

* When the reaction is done you can save your bottle with the cap on, and you can run the reaction again with another Alka-Seltzer tablet.

This investigation was originally posted by  Steve Spangler