How to make a
25 to 50 grams of Ammonium Dichromate
1 pack - Plaster of Paris
1 pack - Papier-Mache
Paints to paint sceneries on the volcano
Ammonium Dichromate Material Safety Data Sheet
This exciting volcano science project is made out of papier-mache, and plaster of paris. At the top of the model, insert a jar lid , or some other flame-resistant container. Coat your volcano model with the plaster slurry to fireproof it, especially near the top of the cone. To make it more life like you can paint mountain scenery around the volcano. Place about 12 to 15 grams of ammonium dichromate in the fire resistant cup at the top of your volcano, and light it. The ammonium dichromate will burn fiercely while producing large volumes of grayish green ash. Small orange sparks will shoot upward a couple inches.
IMPORTANT SAFETY NOTE: Ammonium Dichromate contains hexavalent chromium, which has been shown to cause cancer in humans and animals. While the risk is extremely low for a one time exposure, many schools have banned this demonstration for fear of lawsuits. The experiment is safe, however, if you take care not to ingest any of the dichromate compound. The green ash that results from this experiment is safe, and can be discarded with any sold waste.
Avoid the fumes from this experiment, because it has not been proven safe to breathe them.