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Tuesday, 5 May 2015

Chemical Energy

Chemical energy


The chemical energy is an energy that varies due to the formation or breaking of chemical bonds of any type in the chemical elements involved in chemical reactions.

Since the strength of the chemical bonds is associated with the distance between the chemical species (in fact stronger chemical bonds held closer to the chemical species involved in binding), the chemical energy depends on the mutual position of the particles that constitute a substance.

It is then the energy stored in the chemical bonds and is mainly due to the sum of the potential energy of electrostatic interactions of the charges in the ponderable matter, most of the kinetic energy of the electrons.

If you consider as "zero level" of chemical energy that where there are no chemical bonds, chemical energy is negative. Ties have several different binding energy, the more stable have more negative value.

Resonance is a phenomenon chemical structure that greatly influences the chemical energy in a stabilizing way. The reactivity and kinetics of the various compounds suffer from differences of chemical energy.

The chemical energy is produced in the course of the transformations that take place at the molecular level.


The chemical energy introduced into our bodies with food, for example, allows us to live through oxidation and in general cell metabolism (cellular respiration).