There's a proud history of blowing things up as a part of science education. It's a great way to grab student attention and it shows how powerful chemical reactions can be. The reaction of white phosphorus with potassium chlorate, for instance, is a violent and potent one, and blowing up a metal pound coin shows what that reaction can do.
Periodic Videos, out of the University of Nottingham, continues the tradition with an experiment designed to make a metal imprint of a coin, but which has a slightly different result when that coin is made of two different parts.
All that's needed is a little bit of heat for the explosion and the center of the coin flies right out. And the split between parts is surprisingly clean, owning to quality of the work done on each coin. The twelve sides make an indent that's detailed, but thanks to the , this sort of destruction is technically illegal. Quick to note that no university money was spent on the project, hopefully Sir Martyn Poliakoff won't get into too much trouble for the chaos.