Calorimetry

In the study of science, a very important concept to understand is the power.  All objects have energy.  Energy can be defined as the inner work.  We can interpret the meaning of power as the ability to do work.  Another related concept is the heat energy transferred from a warmer to a cooler object.  Heat can be exothermic or endothermic.  

Furthermore, in Calorimetry it is present a calorimeter.  This object is an instrument used to measure the energy changes of chemical reactions.  The amounts of energy needed in several physical changes can also be measured in a calorimeter.  Additionally, in Calorimetry it is present the concept of enthalpy.  This is a state function associated with the heat absorbed or released in a process or constant pressure.  The change in enthalpy that occurs when carried out a chemical reaction, mainly due to the energy required to break chemical bonds in the reactants and the energy produced by forming chemical bonds in the products.