Answer the following question given this paragraph: 

Internal energy—the sum of the kinetic and potential energies of a system’s atoms and molecules. Can be divided into many subcategories, such as thermal and chemical energy. Depends only on the state of a system (such as its P , V , and T ), not on how the energy entered the system. Change in internal energy is path independent.


Q: The sum of the kinetic and potential energies of a system’s atoms and molecules is called what?

 Choices:

- mechanical energy

- used energy

- stored energy

- internal energy

A:
internal energy
