What are exothermic reactions?
Phase changes in the mass are divided into two basic categories: endothermic and exothermic. Exothermic means "external heat" in Greek, unlike endothermic "internal heat". Endothermic reactions require heat or energy to form new chemical bonds, for example when the ice cube is melted into a liquid and then cooked into steam. On the other hand, exothermic reactions create more energy than to be facilitated to facilitate, causing the temperature to rise immediately around the reaction. This occurs when the rain is formed in a cloud AI when the rain freezes on the ice on the ground.
Some of the most illustrative exotherm reactions include flames. Matches, campfires, fireworks and missiles use exothermic reactions to energy production used for different purposes. Many facilitate endothermic reactions such as making bread, cooking soup or heating hands. However, exothermic reactions not not only issue; Often require at least the initial energy supply that provides what is the indicatedIt reads as energy activation. However, in exotherm reactions, the energy invested will always be lower than the total energy produced; The spark will never be bigger than the flame.
other exothermic reactions are harder to experience. When a rust is formed on the metal, another common exothermic reaction, the process does not seem to be distributed by this process. However, the heat was released; Within a few hours, only under the correct conditions of moisture, light and temperature, mixing of iron and oxygen is produced by iron oxide and heat modicum.
Scientists use a tool called calorimeter to measure how much heat is produced by phase change or chemical reaction. This includes the reaction in the water bath to measure the temperature change. The results show whether the reaction is endothermic or exothermic.
chemikators often employ one or more of several carefully supervised experiments to illustrate the principles of exothermicreactions. The lesson can be as simple as lighting the match and explanation of how the spark arouses the exothermic reaction between sulfur and oxygen to produce heat. Another common experiment involves mixing water and calcium chloride, deicing agent also used in portable heating packages, then measurement of the amount of heat generated reactions.
Many forensic scientists study exothermic reactions exhausting. First, they must learn how different chemical reactions occur and how much heat is produced. As investigators, this knowledge is better equipped to find out what caused fire or explosion - and determined how it is best extinguished in the future.