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.
An exothermic reaction releases heat into the surroundings, and an endothermic reaction absorbs heat from the surroundings. Frying an egg is an example of an endothermic process because the egg solidifies as it absorbs heat from the frying pan. A common example of an exothermic reaction is combustion in the form of a bonfire -- anyone near the flames can readily determine that the fire is releasing heat into the surroundings.