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.
The most exothermic reaction is nuclear fusion, which is the power of a hydrogen bomb. Nuclear fission is also extremely exothermic. An extremely exothermic chemical (as opposed to nuclear) reaction, although maybe not the most ever, is the so-called thermite reaction. Fe2O3 + 2Al ---> Al2O3 + 2Fe Î´H = -851.5 kJ/mol See the Related Questions and Web Links to the left of this answer for more information.