* 2 tablespoons of baking soda, * Half a cup vinegar, * Food coloring of any colors (red, orange, yellow, green, and blue) * Sand or mud
Go outdoors and ask the child to build a volcano out of sand, leaving a hole in the center top. Add 2 tablespoons baking soda, Half a cup of vinegar and some food coloring in the hole. Red would be the most ideal color. Just ask the child to watch what happens and enjoy it.
An alkali(baking soda) combines with acid(vinegar) to give out carbon-di-oxide that froths and comes out as a red volcano.
The liquid inside erupts as a red volcano due to the reaction of vinegar and acid with baking soda an alkali.