1. Introductory Organic Nomenclature
Alkanes, Alkenes and Alkynes

2. Alkanes CnH2n+2 All single bonds Saturated hydrocarbons
Aliphatic or cyclic (note: general formula changes when in ring form)

3. Alkenes
CnH2n
One double bond
unsaturated
Aliphatic or cyclic

4. Alkynes
CnH2n-2
One triple bond
unsaturated
Aliphatic or cyclic

5. Naming the chains
PREFIXES
Meth One carbon
Eth Two carbons
Prop Three carbons
But Four carbons
Pent Five carbons
Hex Six carbons
Hept Seven carbons
Oct Eight carbons
Non Nine carbons
Dec Ten carbons

6. What is this?
How about this one?
Number three?
The same thing?

7. What if this happens?

8. SIDE CHAINS One carbon ---- methyl Two carbons ---- ethyl
Three carbons ---- propyl
Four carbons butyl
Halogens ---- chloro, etc….

9. SPECIAL RULES ABOUT ALKENES AND ALKYNES
The multiple bond gets priority over side chains
Put the multiple bond in the lowest possible position