Final answer:
Chemical to mechanical energy conversion can be seen in an internal combustion engine, where the chemical energy in fuel is converted to mechanical energy that powers a vehicle. It also occurs in the human body, where the chemical energy from food is converted to the kinetic energy used for activities like cycling.
Step-by-step explanation:
An example of chemical to mechanical energy conversion is the process that occurs in an internal combustion engine. The chemical energy stored in gasoline is released through combustion within the engine's cylinders. This reaction produces rapidly expanding gases that push the pistons, thus generating mechanical energy that ultimately powers the vehicle.
In another scenario, when humans consume food, like an ice cream cone, the body metabolizes the nutrients, converting the food's chemical energy into kinetic energy, which is demonstrated when riding a bicycle. The muscles utilize the energy to contract and produce movement, which is a direct conversion of chemical energy to mechanical work.