1. Count the carbon atoms in the longest continuous chain - this gives you the stem;
1- meth , 2- eth, 3- prop, 4- but, 5- pent, 6- hex
2. Decide what type of molecule you've got. This gives you curcial parts of the name - see below;
alkanes - ane, branched alkanes -yl, alkenes -ene, haloalkanes -chloro/bromo/iodo
3. Number the carbons in the longest carbon chain. If there's more than one longest chain, pick the one with the most side chains.
4. Side-chains are added as prefixes at the start of the name. Put them in alphabetical order, with the number of the carbon atom each is attatched to.
5. If there's more than one identical side-chain or functional group, use di (2), tri (3) or tetra (4) before the part of the name - but ignore this when working out the alphabetical order.
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