Potential Energy
Definition and meaning of Potential Energy in chemistry.
Potential energy is the stored energy an object possesses due to its position, state, or the internal arrangement of its constituent parts.
In more detail
In the context of chemistry, chemical potential energy is a fundamental concept, referring to the energy stored within the chemical bonds and intermolecular forces of a given substance. This intrinsic energy depends largely on the relative positions of the negatively charged electrons and the positively charged atomic nuclei. During a chemical reaction, if the newly formed products possess a lower overall potential energy than the starting reactants, the excess energy is typically released into the surroundings as sensible heat.
Key facts
| Field | Physical Chemistry |
|---|---|
| Types in Chemistry | Chemical potential energy, electrostatic potential energy |
| Formula Example | CH4 |
The immense chemical potential energy stored in the hydrocarbon bonds of a methane (CH4) molecule is rapidly released as heat and visible light when it undergoes a combustion reaction.
Frequently asked questions
How does potential energy change when a bond is formed?
Bond formation typically lowers the potential energy of the system, releasing energy.
What is the relationship between potential energy and kinetic energy?
Potential energy can be converted into kinetic energy and vice versa, obeying the law of conservation of energy.