Final answer:
The energy in food molecules is a type of potential energy known as chemical energy, which is stored in chemical bonds and converted into kinetic energy by the body.
Step-by-step explanation:
The energy stored in the bonds of the molecules in the foods that humans eat is a form of potential energy, specifically referred to as chemical energy. This potential energy is stored in the chemical bonds formed between atoms in a molecule. When these bonds are formed, chemical energy is stored and when they break, this energy is released, which can then be converted by the body into kinetic energy to fuel activities such as muscle movement. Thus, the energy bar you eat before a hike contains this chemical energy that your body breaks down and eventually converts into kinetic energy for muscle cells.