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Edexcel IGCSE Chemistry Topic 4 - Organic Chemistry 




Below is everything the examiners think you know, if you're not sure of something click on the link to watch my YouTube video explanation. For a copy of these you can print off, get the FREE revision guide I wrote for you.


 • I can define the term hydrocarbon video 1 video 2

 • I can write and/or draw molecules in each of the following formats: as empirical formulae, molecular formulae, general formulae, structural formulae and displayed formulae

 • I can define the terms homologous series, functional group and isomerism

 • I can name compounds relative to this course (see large example list tabulated below)

 • I can classify reactions of organic compounds as substitution, addition and combustion

 • I can describe the makeup of crude oil

 • I can recall why we need to distil oil into fractions  video 1 video 2

 • I can state some uses for the fractions of crude oil

 • I can describe the process of fractional distillation

 • I can recall how boiling point changes with chain length

 • I can recall how viscosity changes with chain length

 • I can recall how flammability changes with chain length

 • I can describe a fuel as a substance that releases energy when burned

 • I can recall the equation for complete combustion

 • I can recall the equation for incomplete combustion

 • I can compare complete and incomplete combustions

 • I can state why carbon monoxide is poisonous

 • I can recall that nitrogen oxides are made in car engines

 • I can state that some impure hydrocarbons containing sulfur produce sulphur dioxide when burned.

 • I can recall how sulphur dioxide and nitrogen oxides contribute to acid rain

 • I can describe the reasons why we need to crack long hydrocarbon chains

 • I can describe the process of cracking by steam and via a catalyst

 • I can give and use the general formula for alkanes

 • I can name and draw the first 5 alkanes

 • I can explain why alkanes are classified as saturated hydrocarbons 

 • I can describe reactions between alkanes and halogens in ultraviolet radiation

 • I can recall that alkenes contain the C=C functional group

 • I can recall and use the general formula for alkenes

 • I can explain why alkenes are classified as unsaturated hydrocarbons

 • I can name and draw the first four alkenes and name the unbranched-chain isomers

 • I can describe the results of testing for alkenes with bromine water, and compare with the results of testing alkanes with bromine water

 • I can recall the functional group for alcohols

 • I can name and draw the first four alcohols

 • I can describe what happens when ethanol is oxidised by burning in air or in oxygen

 • I can describe what happens when ethanol reacts with oxygen in the air

 • I can describe what happens when ethanol reacts with dichromate (IV) in dilute sulphuric acid 

 • I can describe the process of manufacturing ethanol

 • I can recall the reasons for fermentation

 • I can recall the functional group for carboxylic acids

 • I can name and draw the first four carboxylic acids

 • I can recall the main uses for carboxylic acids

 • I can describe what happens when carboxylic acids react with carbonates

 • I can recall that vinegar is an aqueous solution containing ethanoic acid

 • I can recall that esters contain the functional group -COO

 • I can name and draw ethyl ethanoate

 • I can recall that ethyl ethanoate is the ester produced when ethanol and ethanoic acid react in the presence of an acid catalyst

 • I can name and draw esters, given the alcohols and carboxylic acids that make them up

 • I can describe how to recognise an ester based on their physical characteristics

 • I can describe a practical on how to produce an ester such as ethyl ethanoate

 • I can recall what an addition polymer is and how it is made

 • I can draw the repeat monomers of polymers

 • I can work out the structure of a monomer from looking at a polymer, and vice versa

 • I can explain problems that arise from disposing of addition polymers

 • I can recall that condensation polymerisation involves monomers with different functional groups

 • I can write and draw a polyester when given the formulae of the monomers

 • I can recall that some polyesters are biodegradable, and I can name them