Self Assessment Checklist – Organic Chemistry

Knowing the learning objectives is the first step in acing Chemistry. Master the essential concepts and apply them to interesting Chemistry questions confidently. Topical syllabus objective checklists are available here for your self-assessment. These checklists are based on Cambridge O-level Syllabus. Conduct self assessment when you revise. Tick against objectives that you can confidently say ‘I Can Do It’. Revise objectives that you are unsure of. Knowing what you need to know builds confidence in tackling questions. 

Work hard. Work smart. All the best. 

Ms Tara


Self Assessment Checklist - Fuels and Crude Oil

  I can do this!
aName natural gas, mainly methane, and petroleum as sources of energy.
bDescribe petroleum as a mixture of hydrocarbons and its separation into useful fractions by fractional distillation.
cName the following fractions and state their uses
c(i)petrol (gasoline) as a fuel in cars,
c(ii)naphtha as the feedstock and main source of hydrocarbons used for the production of a wide range of organic compounds in the petrochemical industry,
c(iii)paraffin (kerosene) as a fuel for heating and cooking and for aircraft engines,
c(iv)diesel as a fuel for diesel engines,
c(v)lubricating oils as lubricants and as a source of polishes and waxes,
c(vi)bitumen for making road surfaces.
dDescribe the issues relating to the competing uses of oil as an energy source and as a chemical feedstock.

Self Assessment Checklist - Alkanes

  I can do this!
aDescribe an homologous series as a group of compounds with a general formula, similar chemical properties and showing a gradation in physical properties as a result of increase in the size and mass of the molecules, e.g. melting and boiling points; viscosity; flammability.
bDescribe the alkanes as an homologous series of saturated hydrocarbons with the general formula CnH2n+2.
cDraw the structures of branched and unbranched alkanes, C1 to C4, and name the unbranched alkanes methane to butane.
dDefine isomerism and identify isomers.
eDescribe the properties of alkanes (exemplified by methane) as being generally unreactive except in terms of combustion and substitution by chlorine.

Self Assessment Checklist - Alkenes

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aDescribe the alkenes as an homologous series of unsaturated hydrocarbons with the general formula CnH2n.
bDraw the structures of branched and unbranched alkenes, C2 to C4, and name the unbranched alkenes ethene to butane.
cDescribe the manufacture of alkenes and hydrogen by cracking hydrocarbons and recognise that cracking is essential to match the demand for fractions containing smaller molecules from the refinery process.
dDescribe the difference between saturated and unsaturated hydrocarbons from their molecular structures and by using aqueous bromine.
eDescribe the properties of alkenes (exemplified by ethene) in terms of combustion, polymerisation and the addition reactions with bromine, steam and hydrogen.
fState the meaning of polyunsaturated when applied to food products.
gDescribe the manufacture of margarine by the addition of hydrogen to unsaturated vegetable oils to form a solid product.

Self Assessment Checklist - Alcohols

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aDescribe the alcohols as an homologous series containing the –OH group.
bDraw the structures of alcohols, C1 to C4, and name the unbranched alcohols methanol to butanol.
cDescribe the properties of alcohols in terms of combustion and oxidation to carboxylic acids.
dDescribe the formation of ethanol by the catalysed addition of steam to ethene and by fermentation of glucose.
eState some uses of ethanol, e.g. as a solvent; as a fuel; as a constituent of alcoholic beverages.

Self Assessment Checklist - Carboxylic Acids

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aDescribe the carboxylic acids as an homologous series containing the –CO2H group.
bDraw the structures of carboxylic acids methanoic acid to butanoic acid and name the unbranched acids, methanoic acid to butanoic acid.
cDescribe the carboxylic acids as weak acids, reacting with carbonates, bases and some metals.
dDescribe the formation of ethanoic acid by the oxidation of ethanol by atmospheric oxygen or acidified potassium manganate(VII).
eDescribe the reaction of a carboxylic acid with an alcohol to form an ester, e.g. ethyl ethanoate.
fState some commercial uses of esters, e.g. perfumes; flavourings; solvents.

Self Assessment Checklist - Macromolecules

  I can do this!
aDescribe macromolecules as large molecules built up from small units, different macromolecules having different units and/or different linkages.
bDescribe the formation of poly(ethene) as an example of addition polymerisation of ethene as the monomer.
cState some uses of poly(ethene) as a typical plastic, e.g. plastic bags; clingfilm.
dDeduce the structure of the polymer product from a given monomer and vice versa.
eDescribe nylon, a polyamide, and Terylene, a polyester, as condensation polymers, the partial structure of nylon being represented as

and the partial structure of Terylene as

(Details of manufacture and mechanisms of these polymerisations are not required)
fState some typical uses of man-made fibres such as nylon and Terylene, e.g. clothing; curtain materials; fishing line; parachutes; sleeping bags.
gDescribe the pollution problems caused by the disposal of non-biodegradable plastics.
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