Edward B. answered 08/18/21
Happy to be Your Science or Math Tutor
Hi Ishimwe,
I'm Eddie I can help with this question it is important to memorize different functional groups. Oils, fats, petroleum, gasoline, plastics are all composed of hydrocarbons or CH groups. The functional group would be a hydrocarbon or methyl group. If you need further help with Chemistry feel free to reach out best.