When Water is Added to Quicklime, a Rise in Temperature is Observed. This is an Example of _____ reaction

Answer:  When water is added to quicklime, the temperature rises. This is an example of an exothermic reaction. 

An exothermic reaction is a reaction that releases energy in the form of light or heat. In the process, energy is released into the environment by an exothermic reaction. In exothermic reactions, the change in enthalpy (ΔH) is negative.