Containing the dichromate volcano

Round bottomed flask containing ammonium dichromate as it decomposes

Source: Declan Fleming

An updated and safer version of this classic, spectacular chemistry demonstration

The dichromate volcano is a classic chemistry experiment. Safety concerns have seen it banned in some countries and carried out less frequently in others. However, Declan provides instructions for carrying it out safely, and a high quality, up-to-date video to show your class 

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