1. Unsaturated Hydrocarbons Hydrocarbons that don’t contain all single bonds between the carbon atoms. Alkanes are saturated hydrocarbons. They only contain single bonds.

2. Alkenes Have the general formula C n H 2n Structure contains at least one double bond. When naming them, the parent chain name ends in –ene.

3. Name Molecular Formula C n H 2n Structural Formula Model Ethene Propene 2-Butene

4. Draw: 3-ethyl-1-pentene

5. Draw: 1,3-butadiene

6. Draw: 4-butyl-1-cyclohexene

7. Name: C-C=C-C=C=C-C-C

8. Alkynes Have the general formula C n H 2n-2 Structure contains at least one triple bond. When naming them, the parent chain name ends in –yne.

9. Name Molecular Formula C n H 2n Structural Formula Ethyne 1-Propyne 1-Butyne

10. Draw: 2-pentyne

11. Draw: 3-ethyl-3-methyl-1-hexyne

12. Name: C C-C-C-C-C-C-CΞC-C C C-C-C-C