Question

5. Explain what is chemical energy. To what uses
is this energy put?​

Answer 1

Answer:

Chemical energy is energy stored in the bonds of chemical compounds, like atoms and molecules. This energy is released when a chemical reaction takes place. Usually, once chemical energy has been released from a substance, that substance is transformed into a completely new substance.

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Answer 2

Answer:

Chemical energy is the potential of a chemical substance to undergo a chemical reaction to transform into other substances. Examples include batteries, food, gasoline, etc. Breaking or making of chemical bonds involves energy, which may be either absorbed or evolved from a chemical system.

Energy that can be released or absorbed because of a reaction between a set of chemical substances is equal to the difference between the energy content of the products and the reactants, if the initial and final temperatures are the same. This change in energy can be estimated from the bond energies of the various chemical bonds in the reactants and products. It can also be calculated from {\displaystyle \Delta {U_{f}^{\circ }}_{\mathrm {reactants} }} \Delta {U_{f}^{\circ }}_{{{\mathrm {reactants}}}}, the internal energy of formation of the reactant molecules, and {\displaystyle \Delta {U_{f}^{\circ }}_{\mathrm {products} }} \Delta {U_{f}^{\circ }}_{{{\mathrm {products}}}} the internal energy of formation of the product molecules.

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