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Topic 6: Chemical Reactions
4 subtopics · Rates of reaction, reversible reactions and redox
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6.1
Physical and Chemical Changes
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Distinguishing physical from chemical changes, evidence of chemical reaction
6.2
Rate of Reaction
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Collision theory, effect of concentration, pressure, surface area, temperature and catalysts, rate graphs, enzymes, photochemical reactions
6.3
Reversible Reactions and Equilibrium
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The ⇌ symbol, hydrated/anhydrous salts, dynamic equilibrium, Haber and Contact processes
6.4
Redox
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Oxidation and reduction by oxygen and electrons, oxidation numbers, oxidising and reducing agents, KMnO₄ and KI tests