ALKANES – Saturated Hydrocarbon
Carbon-carbon single bond made up of carbon and hydrogen
General Formulae CnH2n+2
Methane – CH4
Ethane – C2H6
Propane – C3H8
Butane – C4H10
Pentane – C5H12
Homologous Series – Members of the same family have similar functional group similar chemical properties and general formulae but different physical property and each members differs from successive by CH2.
COMBUSTION
COMPLETE
| INCOMPLETE
|
| FUEL IS COMPLETELY BURNED | FUEL IS PARTIALLY BURNED DUE TO LIMITED SUPPLY OF OXYGEN
|
| PRODUCES CARBON DIOXIDE AND WATER | PRODUCES CARBON MONOXIDE AND WATER
|
| IT IS NOT TOXIC | CARBON MONOXIDE IS TOXIC AS IT DECREASES. THE OXYGEN CARRYING CAPACITY OF RED BLOOD CELLS
|
Edexcel IGCSE Chemistry Alkanes
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PRODUCTS OF COMBUSTION
Carbon Dioxide Test
Limewater Test Carbon Dioxide will turn limewater milky
Water Test
FUNCTIONAL GROUPS
Groups of atoms that give special properties and reactions to the organic molecule
| Functional Groups | Examples | Formation | |
| ALKENES | = | Ethene, propene, butene, pentene | Cracking of crude oil |
| ALCOHOLS | -OH | methanol, ethanol, propanol, butanol, pentanol | Reaction of alkene with water |
| CARBOXYLIC ACID |  | methanoic acid, ethanoic acid, propanoic acid, butanoic acid. | Oxidation of alcohols |
| ESTERS |  | methyl ethanoate, ethyl ethanoate | Reaction of alcohols and carboxylic acid |
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References:
BBC Bitesize
Wikipedia
Wikimedia Commons
