1. Alkenes and Alkynes

2. Alkenes
CnH2n (subtract 2 additional hydrogens for more than one double bond)
Unsaturated hydrocarbons containing DOUBLE BONDS

3. Naming Find the longest chain CONTAINING the DOUBLE BOND
Number the chain so that the double bond has the lowest number possible
State the position # after the suffix providing number of carbons, and end in “ene”
Name and number branches as per alkane naming

4. Examples

5. AlkYnes
CnH2n-2 (subtract 2 additional hydrogens for more than one triple bond)
Unsaturated hydrocarbons containing TRIPLE BONDS

6. Naming Find the longest chain CONTAINING the TRIPLE BOND
Number the chain so that the double bond has the lowest number possible
State the position # after the suffix providing number of carbons, and end in “yne”
Name and number branches as per alkane naming

7. EXAMPLES