Nonpolar molecules are chemical compounds that do not have distinct positive or negative ends, meaning they have an even distribution of electrical charge. This occurs when atoms in the molecule share electrons equally, often seen in molecules made up of the same type of atoms, like O2 or N2. Nonpolar molecules tend to be hydrophobic, meaning they do not mix well with water. Due to their lack of polarity, nonpolar molecules are often soluble in nonpolar solvents, such as hexane or benzene. Common examples include lipids and fats, which play essential roles in biological systems. Understanding nonpolar molecules is crucial in fields like chemistry and biology, as they influence various processes, including cell membrane structure and function.