Categorize each hydrocarbon as being saturated or unsaturated. 3-methyloctane cyclopentene propane heptyne heptane

             Saturated: i) 3-Methyloctane ii) Heptane iii) Propane

             Unsaturated:  i) Heptyne  ii) Cyclopentene

                     Saturated Hydrocarbons are those organic compounds which are saturated i.e. all the bonds between carbon atoms are single. In other words the bonds between carbon atoms are sigma bonds (formed due to head to head overlap of orbitals)

Examples of Saturated Hydrocarbons are highlighted in Red color in attached figure.

                     Unsaturated Hydrocarbons are those organic compounds which are unsaturated i.e. they contain either one or more than one double or triple bonds along with or without single bonds.. In other words one or more bonds between carbon atoms are pi bonds (formed due to side wise overlap of p orbitals)

Examples of unsaturated Hydrocarbons are highlighted in Blue color in attached figure.

For PLATO: they left out one

         Saturated: 3-Methyloctane,  Heptane, Propane

           Unsaturated: Propyne, Heptyne, Cyclopentene