Hydrocarbons Hydrocarbons are molecules that are made of carbon and hydrogen ONLY. TABLE 3-1 Hydrocarbon Classifications Compound Type Functional Group Example alkanes none (no double or triple bonds) CH3-CH2一CH,propane alkenes C=C double bond CH2=CH一CH3,propene alkynes -C=C-triple bond H-C=C-CH3,propyne CH,CH; aromatics benzene ring ethylbenzene 201 Peon Esucationre 2013 Pearson Education,Inc. Chapter 3 2© 2013 Pearson Education, Inc. Hydrocarbons are molecules that are made of carbon and hydrogen ONLY. Hydrocarbons Chapter 3 2