Unit 2 Application of Core Principles of Chemistry - 2.11 - Mechanisms

Students will be assessed on their ability to:

a) classify reactions (including those in Unit 1) as addition, elimination, substitution, oxidation, reduction, hydrolysis or polymerization

b) demonstrate an understanding of the concept of a reaction mechanism and that bond breaking can be homolytic or heterolytic and that the resulting species are either free radicals, electrophiles or nucleophiles

c) give definitions of the terms free radical, electrophile and nucleophile

d) demonstrate an understanding of why it is helpful to classify reagents

e) demonstrate an understanding of the link between bond polarity and the type of reaction mechanism a compound will undergo

f) describe the mechanisms of the substitution reactions of halogenoalkanes and recall those in 1.7.2e and 1.7.3e

g) demonstrate an understanding of how oxygen, O2, and ozone, O3, absorb UV radiation and explain the part played by emission of oxides of nitrogen, from aircraft, in the depletion of the ozone layer, including the free radical mechanism for the reaction and the fact that oxides act as catalysts.