Fuels like gasoline are nonpolar and high in energy because they are largely composed of hydrocarbons.

Here's why:

* Hydrocarbons: These are molecules made up of only hydrogen (H) and carbon (C) atoms.

* Nonpolar: Carbon and hydrogen have similar electronegativity (ability to attract electrons), leading to a balanced distribution of electrons within the molecule. This results in a nonpolar molecule.

* High Energy: The bonds between carbon and hydrogen store a lot of chemical energy. When these bonds are broken during combustion, the energy is released as heat and light.

In summary: The long chains of carbon and hydrogen atoms in hydrocarbons create a nonpolar molecule with a high density of energy. This makes them excellent fuels.