Explosives

At first I thought explosives were just used for fireworks and in the military, but explosives are more complex then you think. The laws of thermodynamics, endo- and exothermic reactions and enthalpy help to create explosives. The law of thermodynamics is energy that cannot be created or destroyed, specifically heat and heat capacity. Endothermic reactions is when heat is absorbed by the system from the surroundings. Exothermic reactions is when heat is released by the system into the surrounding. Enthalpy is the heat flow and the internal energy of the reaction.

Explosive Engineers uses thermodynamics, endothermic, exothermic reactions, and entrapy in order to design the explosives. When designing explosives, the engineers want to produce rock fragments of a certain size and low vibration levels. Explosives are made by detonating which means to explode on contact. According to the this link
http://www.explosives.org/index.php/component/content/article?id=71 detonation is a fast chemical reaction that uses oxygen in the material, instead of in the air, to explode. When the reaction happens gases are released and expands. Energy is also released when the reaction becomes hot like an exothermic reaction. After an explosive goes off, the engineers then uses enthalpy in order to see what can be changed about the explosive. Then the engineers will try again until they get the perfect size of rock fragments and low vibration levels.