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.
In a molecule or compound, a majority of the energy is held in the bonds that link the molecules. Bonds have varying strengths. When a reaction occurs that causes these bonds to break, it gives off energy and is, therefore, exothermic. Examples of Exothermic Reactions. Exothermic reactions are very common. Let's take our match example from the beginning. The friction that is caused when you rake the matchhead against a rough surface ignites the phosphorus and potassium chlorate in the head of the match and they continue to burn with the oxygen in the air.