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Helping with my Chemistry Revision

euan mccormack

on 2 December 2010

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Transcript of Chemistry

Chemistry Hydrocarbons and Fuels Fuels What Is a FUEL? a FUEL is a CHEMICAL which BURNS to give out ENERGY Combustion When a fuel burns the chemical reaction is know as COMBUSTION. When COMBUSTION takes place the fuel is REACTING WITH OXYGEN from the air and ENERGY IS GIVEN OUT. This means that combustion is an example of an EXOTHERMIC REACTION Fossil Fuels fossil fuels are formed over MILLIONS OF YEARS. PLANTS AND ANIMALS died and fell to the sea or swamp floor the remains were quickly covered in SEDEMENT after millions of years COAL, OIL and NATURAL GAS are formed Alkanes contain no CARBON-TO-CARBON DOUBLE BONDS they are SATURATED HYDROCARBONS the names of all the members of the family end in -ANE The alkane family make up a HOMOLOGOUS SERIES. Homologous series this means that they are all covered by the same general formula = (CnH2n+2) Cycloalkane Family the CYCLOALKANES are another series of HYDROCARBONS the carbon atoms in cycloalkanes FORM A RING instead of a chain members of the cycloalkane family make up another HOMOLOGOUS SERIES the general formula for the cycloalkane is (CnH2n)
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