An endothermic reaction is any chemical reaction that absorbs heat from its environment. Ex: the reaction of barium hydroxide octahydrate crystals with dry ammonium chloride,dissolving ammonium chloride in water Ex exothermic: any combustion reaction, neutralization reaction,rusting of iron (rust steel wool with vinegar)the thermite reaction.
Asked by William
What is the best way to remember specific dates etc.. without making pneumonics?