Final answer:
The energy in chemical bonds (a) is not an example of kinetic energy; instead, it is potential energy. Kinetic energy is the energy of motion, evident in cases of heat, light, and sound, which are all examples of kinetic energy due to their active movement or vibration.
Step-by-step explanation:
The question asks which of the following is not an example of kinetic energy:
- a. The energy in chemical bonds
- b. Heat
- c. Light
- d. Sound
- e. Random molecular movement
The correct answer is a. The energy in chemical bonds. This is because the energy stored in chemical bonds is a form of potential energy rather than kinetic energy. Kinetic energy is associated with the motion of objects or particles, such as in the cases of heat (random molecular movement), light, and sound, which are all examples of energy in motion.
Heat is a form of kinetic energy that arises from the random motion of molecules and atoms within a substance. This thermal energy varies directly with the temperature of the substance—higher temperatures mean greater molecular movement and, hence, more kinetic energy. Light and sound are also kinetic, as they represent energy transmitted through space by photon movement and by vibrating air molecules, respectively.