(a) describe the alkenes as an homologous series of unsaturated hydrocarbons with the general formula CnH2n
(b) draw the structures of branched and unbranched alkenes, C2 to C4, and name the unbranched alkenes, ethene to butene
(c) describe 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
(d) describe the difference between saturated and unsaturated hydrocarbons from their molecular structures and by using aqueous bromine
(e) describe the properties of alkenes (exemplified by ethene) in terms of combustion, polymerisation and the addition reactions with bromine, steam and hydrogen
(f) state the meaning of polyunsaturated when applied to food products
(g) describe the manufacture of margarine by the addition of hydrogen to unsaturated vegetable oils to form a solid product
O Level - Combined Chemistry
(a) describe the alkenes as an homologous series of unsaturated hydrocarbons with the general formula CnH2n
(b) draw the structures of unbranched alkenes, C2 to C3 and name the unbranched alkenes, ethene to propene
(c) describe 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
(d) describe the difference between saturated and unsaturated hydrocarbons from their molecular structures and by using aqueous bromine
(e) describe the properties of alkenes (exemplified by ethene) in terms of combustion and the addition reactions with bromine and hydrogen
(f) state the meaning of polyunsaturated when applied to food products
(g) describe the manufacture of margarine by the addition of hydrogen to unsaturated vegetable oils to form a solid product
(h) describe the formation of poly(ethene) as an example of addition polymerisation of ethene as the monomer
(i) state some uses of poly(ethene) as a typical plastic, e.g. plastic bags; clingfilm
(j) deduce the structure of the addition polymer product from a given monomer and vice versa
(k) describe the pollution problems caused by the disposal of non-biodegradable plastics
N(A) Level - Combined Chemistry
(a) describe the alkenes as an homologous series of unsaturated hydrocarbons with the general formula CnH2n
(b) draw the structures of unbranched alkenes, C2 to C3 and name the unbranched alkenes, ethene to propene
(c) describe 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
(d) describe the difference between saturated and unsaturated hydrocarbons from their molecular structures and by using aqueous bromine
(e) describe the properties of alkenes (exemplified by ethene) in terms of combustion and the addition reactions with bromine and hydrogen
(f) state the meaning of polyunsaturated when applied to food products
(g) describe the manufacture of margarine by the addition of hydrogen to unsaturated vegetable oils to form a solid product
-Syllabuses from SEAB
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