The nuclear reactions are those processes that lead to the combination or modification of atomic nuclei. When these nuclei are combined or fragmented, the release wave absorption of particles and energy.
If the nuclear reaction releases energy in the form of heat or light, the process is called exothermic reaction . Instead, when the reaction involves the energy absorption , it is known as endothermic reaction .
Endothermic reactions, therefore, are all chemical reactions in which absorbs Energy . It should be noted that, as a result of the reaction, the energy of the product is greater than the energy of the reagents.
In addition to all of the above, we can determine that a clear example of an endothermic reaction is the production of what is known as Ozone. However, we cannot ignore that, in the same way, it is the process of so-called photosynthesis. In this, what happens is that the plants take the energy that the sun gives off and then transform what is water and carbon dioxide into oxygen and sugar.
In the same way, it is also established that the dissolution of ammonium nitrate in water, the obtaining of hydrogen, the cooling of water and even the melting of ice are endothermic reactions.
The endothermic reaction implies an increase in enthalpy . This concept refers to a magnitude whose variation reveals the level of energy that a thermodynamic system exchanges with the environment .
The ultraviolet rays that come from the sun, for example, generate an endothermic reaction in the upper layers of the atmosphere that results in the generation of ozone . Another endothermic reaction occurs when iron reacts with sulfur and occurs Iron sulfide .
In endothermic reactions, in short, the elements absorb energy from the system so that the nuclear reaction can take place. This means that, when taking thermal energy (heat), the reaction in question is produced or accelerated.
Just the opposite occurs with exothermic reactions that, during their development, release energy (such as when a person light a fire and produce fire, releasing heat).
It is also worth knowing other information of interest about the aforementioned reactions, among which we can highlight the following:
-Other of the examples thereof is the obtaining of chromium oxide from what is ammonium dichromate.
- It should not be overlooked either that an endothermic reaction between two solid type compounds is the one that produces for example when the mixture of ammonium nitrate and barium hydroxide is undertaken.
-In these endothermic reactions different types of energy can be used, although the most common is usually the calorific class. However, in the same way, you can proceed to use the chemical, light or electrical. Everything will depend on the expected results and, above all, on the elements with which it will work.
