A carbocycle is a type of chemical structure that consists of carbon atoms arranged in a closed loop or ring. These rings can vary in size and can be made up of only carbon atoms or include other elements. Carbocycles are important in organic chemistry and are found in many natural and synthetic compounds, including pharmaceuticals and plastics. Common examples of carbocycles include cyclohexane and benzene. The properties of these compounds can change significantly based on the size and arrangement of the carbon atoms in the ring. Understanding carbocycles is essential for chemists working in fields like materials science and drug development.