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http://www.bbc.co.uk/education/guides/zm9hvcw/revision<br />
A homologous series is a family of hydrocarbons with similar<br />
chemical properties who share the same general formula.<br />
There are three Series alkanes, alkenes, and cycoalkanes.<br />
alkanes end in -ane.<br />
How Alkanes Names are Made<br />
The longest unbranched chain that has the functional group is<br />
called the parent molecule. Name the branches to indicate the<br />
number of branches Each branch is numbered indivdualy and a<br />
comma between numbers and a dash between numbers and<br />
letters<br />
Alkenes<br />
They all end in ene. They all contain a double bond. Nameing<br />
them has the same rules as alkanes but the double bond must be<br />
identified.<br />
Cycloalkanes<br />
All names begin with Cyclo- and end in -ane. They have the<br />
same general Formula As Alkenes but contain only single<br />
bonds . used mostly for motor fuel Natural Gas ,Kerosene,<br />
Diesel ECT.<br />
All hydrocarbons can undergo combustion reactions with<br />
enough oxygen. Alkenes go through and additonal reaction<br />
because of the double bond<br />
Isomers<br />
Isomers are compounds with the same molecular formulae but<br />
different structural formulae.<br />
They have the same number of each type of atom but may have<br />
different physical and chemical properties.<br />
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