34 DUTY TO WARN it is really a Type B special relationship based on a profes-sional's general obligation to the community he serves.
Endothermic reactions: Heat is absorbed. 1) Photosynthesis: Plants absorb heat energy from sunlight to convert carbon dioxide and water into glucose and oxygen. 2) Cooking an egg: Heat energy is absorbed from the pan to cook the egg. Exothermic reactions: Heat is released.
Exothermic Reaction Examples. Exothermic chemical reactions release heat to the environment. AITCH, Getty Images. An exothermic reaction is a chemical reaction that releases heat and has a negative enthalpy (-Î´H) and positive entropy (+Î´S).. These reactions are energetically favorable and often occur spontaneously, but sometimes you need a little extra energy to get them started.