6.1 Rates of reaction
Cambridge (CIE) IGCSE Chemistry Revision Notes
📌 Topic 6: Chemical Reactions
6.1 Physical and chemical changes
1 Identify physical and chemical changes, and describe differences between them▼
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6.2 Rate of reaction
1 Describe effect of concentration, pressure, surface area, temperature, catalysts on rate▼
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2 State that a catalyst increases rate and is unchanged at end▼
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3 Describe practical methods for investigating rate of reaction▼
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4 Interpret data and graphs from rate experiments▼
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5 Describe collision theory Supplement▼
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6 Explain effects on rate using collision theory Supplement▼
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7 State that catalyst decreases activation energy Supplement▼
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6.3 Reversible reactions and equilibrium
1 State that some chemical reactions are reversible▼
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2 Describe how changing conditions affects reversible reactions▼
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3 Describe equilibrium in a closed system Supplement▼
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4 Predict how position of equilibrium is affected by changes Supplement▼
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5 State Haber process equation and conditions Supplement▼
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6 State Contact process equation and conditions Supplement▼
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6.4 Redox
1 Use Roman numerals to indicate oxidation number▼
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2 Define redox as simultaneous oxidation and reduction▼
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3 Define oxidation as gain of oxygen, reduction as loss of oxygen▼
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4 Define oxidation as loss of electrons, reduction as gain of electrons Supplement▼
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5 Identify oxidising and reducing agents Supplement▼
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