Baking Soda & Vinegar Volcano
I remember making this in preschool we made the volcano in the sand the volcano complete sank after the red food colouring the baking soda and the vinegar had erupted from the hole in the volcano. When the volcano erupts it makes awesome chemical reaction making the food colouring fall off the egde. That inspired to make bigger out of paper mashy I took in to school and added two time as much as I did last time and it erupted and went all over the floor.
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