What Are Endothermic & Exothermic Reactions | Reactions | Chemistry | AddyESchool
An exothermic reaction gives off energy to the surroundings; like a fire giving off heat. An endothermic reaction takes in energy fr...
Chemical reaction, a process in which one or more substances, the reactants, are converted to one or more different substances, the products. Substances are either chemical elements or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products.