Exploding Easter Eggs

Throw out the Easter Egg hunt and shake it up with this exploding Easter Egg activity!

The Science:

Alka-Seltzer is made of citric acid and sodium bicarbonate (baking soda). When the Alka-Seltzer is dissolved in water the citric acid and baking soda form an acid-base reaction. The citric acid is the acid and the baking soda is the base. The resulting reaction creates carbon dioxide bubbles. When the egg is closed the carbon dioxide has no where to go creating pressure in the egg. The pressure will build up leading to the explosion!