Citric acid is an acid while backing soda is an alkali. When the two are mixed together, they react violently, producing water and gas. Then you will see the bubbling and erupting.
Contents:
- 1 Volcano model
- 1 Packet of citric acid
- 1 Packet of red baking soda
- 1 Piece of pumice
- 1 Piece of Granite
- 1 Piece of Limestone
- 1 Cup
- 1 Stir stick
- 1 Spoon
- 1 Magnifier
- Detailed instructions for use and care are included.