(a) *describe the effect of concentration, pressure, particle size and temperature on the rates of
reactions and explain these effects in terms of collisions between reacting particles
(b) defi ne the term catalyst and describe the effect of catalysts (including enzymes) on the rates of
reactions
(c) *explain how pathways with lower activation energies account for the increase in rates of reactions
(d) state that transition elements and their compounds act as catalysts (see 8.3) in a range of industrial
processes and that enzymes are biological catalysts
(e) suggest a suitable method for investigating the effect of a given variable on the rate of a reaction
(f) *interpret data obtained from experiments concerned with rate of reaction
reactions and explain these effects in terms of collisions between reacting particles
(b) defi ne the term catalyst and describe the effect of catalysts (including enzymes) on the rates of
reactions
(c) *explain how pathways with lower activation energies account for the increase in rates of reactions
(d) state that transition elements and their compounds act as catalysts (see 8.3) in a range of industrial
processes and that enzymes are biological catalysts
(e) suggest a suitable method for investigating the effect of a given variable on the rate of a reaction
(f) *interpret data obtained from experiments concerned with rate of reaction
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