The volcano thing you mentioned is probably the decomposition of ammonium dichromate. It's orange crystals, which you make a small heap of. On the top you drip some alcohol and light it up. The heat then starts the reaction: ammonium dichromate decomposes into chromium(III)oxide, which is green, and because large amounts of water vapor and nitrogen gas also develop in the reaction, the chromium oxide will be a very light and fluffy powder, taking up much more space than the chromate crystals before. Its very toxic, carcinogenic and generally unpleasant - but also very impressive.
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We will wait for the day star to rise again.
notice/have time It should be currently fixable.