Gambon has played the eponymous mystery writer protagonist in the BBC television serial The Singing Detective, Jules Maigret in the 1990s ITV serial Maigret, and Professor Albus Dumbledore in the Harry Potter films after the death of actor Richard Harris who played the part in the first two Harry Potter films.
Exothermic reaction. 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 â products + energy. Exothermic Reaction means exo meaning releases and thermic means heat. So the reaction in which there is release of heat with or without light is called exothermic reaction.
exothermic reacticon-a chemical reaction in which energy is released to the surroundings as heat endothermic reaction-a chemical reaction in which more energy is needed to br â¦ eak the bonds in the reactants than is given off by forming bonds in the products.here is a net loss of energy from the reactants.   However, exothermic reactions also need a lit â¦ tle energy to get started, but this is less than the eventual amount given out.   An endothermic reaction takes in energy, also usually from the surroundings.