Experimentation is a major part of my art making process...that doesn't make it hurt any less when something is a fail. I definitely learned a few things about the melting point of cheap plastic and the temperature of epoxy resin as it hardens. At least nothing exploded.
An exothermic reaction is a chemical reaction that releases energy by light or heat. It is the opposite of an endothermic reaction. Expressed in a chemical equation:
reactants → products + energy.