Which energy form is not a form of potential energy?

• A. Elastic potential energy
• B. Gravitational potential energy
• C. Chemical potential energy
• D. Thermal energy

Answer: (D)

Energy stored because of position or arrangement is called potential energy. Elastic potential energy sits in a stretched or compressed spring, gravitational potential energy depends on height in a gravitational field, and chemical potential energy is stored in the bonds and arrangement of atoms. Thermal energy, on the other hand, is the internal energy arising from the random motion and microscopic interactions of particles, which relates to temperature rather than position or configuration. So thermal energy is not a form of potential energy. It can change when potential energy is transformed into heat (or vice versa), but it itself is not a stored-energy form tied to position.