IGCSE Chemistry Revision Notes
Topic:Chemical reactions
Sub Topic: 6.2 Rate of reaction
Syllabus Objectives:
CORE:
- 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
- State that a catalyst increases the rate of a reaction and is unchanged at the end of a reaction
- 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
- Interpret data, including graphs, from rate of reaction experiments
EXTENDED:
- 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
- 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
- State that a catalyst decreases the activation energy, Ea , of a reaction
- 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
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