Chemistry · IGCSE · Cambridge · Cambridge IGCSE (9–1) Chemistry 0971 (Extended) (2026–2028) · Specification point · 6.2 · Chemical reactions
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Exam Questions
6.2 Rate of reaction
| Core | Supplement |
|---|---|
1 Describe the effect on the rate of reaction of: (a) changing the concentration of solutions (b) changing the pressure of gases (c) changing the surface area of solids (d) changing the temperature (e) adding or removing a catalyst, including enzymes | 5 Describe collision theory in terms of: (a) number of particles per unit volume (b) frequency of collisions between particles (c) kinetic energy of particles (d) activation energy, Eₐ |
2 State that a catalyst increases the rate of a reaction and is unchanged at the end of a reaction | 6 Describe and explain the effect on the rate of reaction of: (a) changing the concentration of solutions (b) changing the pressure of gases (c) changing the surface area of solids (d) changing the temperature (e) adding or removing a catalyst, including enzymes using collision theory |
3 Describe practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas |
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7 State that a catalyst decreases the activation energy, Eₐ, of a reaction
4 Interpret data, including graphs, from rate of reaction experiments | 8 Evaluate practical methods for investigating the rate of a reaction including change in mass of a reactant or a product and the formation of a gas |