2.2 Rate of chemical change
2.2.2—Collision theory
2.2.3—Factors affecting rate
2.2.4—Activation energy (Ea)
2.2.5—Catalysts
2.2.6 (HL)—Reaction mechanisms
2.2.7 (HL)—Energy profiles
2.2.8 (HL)—Molecularity
2.2.9 (HL)—Rate equations
2.2.10 (HL)—Reaction order
2.2.11 (HL)—Rate constant (k)
2.2.12 (HL)—Arrhenius equation
2.2.13 (HL)—Arrhenius factor (A)
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