Which of the following is a part of internal energy Chemical

Energy manifests itself in many forms:

1. Nuclear Energy - The potential energy required to bind nucleons in the nucleus
2. Light Energy - The potential energy possessed by the oscillating electric and magnetic fields that make up electromagnetic radiation
3. Chemical Energy - The potential energy stored in the electrostatic bonding relationships among atoms in a molecule
4. Electrical Energy - The potential energy involved in initiating and maintaining electron flow
5. Mechanical Energy - The energy generated (or stored) by machines which induces (or results from) concerted motion processes in a system
6. Heat Energy - The kinetic energy associated with random motion of matter including the vibratory and rotatory action of molecules