e, which acts as a catalyst in the reaction. Thus, the reaction makes an excited form of luciferase, which soon returns to its original state. Energy as light is released when the lucifrase returns to its normal state. The insect can easily control this reaction with an inhibitor it naturally makes. Another contributor in this consideration is entropy. It is the measure of energy not available for work in the reaction that becomes energy moved to disorder. Entropy is simply a measurement of unusable energy in a closed thermodynamic system. An acid and base reaction is another thing to consider. Acids and bases react very readily to each other. When an acid and a base react, they form water and a salt. Acids and bases neutralize each other and form a salt as a byproduct. This reaction reaches what is called equilibria, (When a substance is completely neutral in charge and acidity). One example of how acids and bases react is the reaction of calcium hydroxide and phosphoric acid to produce calcium phosphate and water:3Ca(OH)2 + 2H3PO4 -* Ca3(PO4)2 + 6H2O The last detail is the reaction conditions. The temperature, humidity, and barometric pressure will affect the reaction. Even a slight change in any one of these could change the reaction. Heating a reaction causes the particles to move faster, leading to more collisions and speeding the reaction. There are many branches of Chemistry that use chemical reactions, infact, almost all of them. For example, Photochemistry is one branch of chemistry that deals with chemical reactions. It has to do with the radiant energy of all kinds formed during chemical reactions. Photochemists will experiment with chemical reactions. They will perform reactions normally only possible at high temperatures in room temperature under ultra-violet radiation. The reaction rate can be controlled for observation by varying the intensity of the radiation. X-rays...
