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Rate and Extent of Reactions — Grade 12 Physical Sciences Notes

Comprehensive CAPS-aligned study notes for Rate and Extent of Reactions in Grade 12 Physical Sciences. Browse the sections below to find detailed explanations, worked examples, and exam preparation material.

Sections in Rate and Extent of Reactions

Introduction and Energy Changes

Introduction and Energy Changes in Chemical Reactions Every chemical reaction involves the breaking and forming of chemical bonds. Breaking bonds requires energy input, while forming new bonds…

Activation Energy and Catalysts

Activation Energy and Catalysts For a chemical reaction to take place, the reacting particles must collide with sufficient energy. This minimum energy requirement is called the activation energy.…

Enthalpy and Exo/Endothermic Reactions

Enthalpy and Exothermic/Endothermic Reactions When chemical reactions take place, the energy stored in the bonds of the reactants and products differs. The measure of this total energy content is…

Rates of Reactions and Influencing Factors

Rates of Reactions and Influencing Factors The rate of a chemical reaction tells us how fast reactants are consumed or products are formed. Understanding how to measure, calculate, and manipulate…

Collision Theory and Reaction Mechanisms

Collision Theory and Reaction Mechanisms Collision theory is the model used to explain why reactions happen and what determines their rate. In the CAPS curriculum, you are expected to use collision…

Measuring Rates of Reactions

Measuring Rates of Reactions In the CAPS curriculum, you are expected to design and interpret experiments that measure reaction rate. This section covers the practical methods used to measure rates,…

Frequently Asked Questions

What is covered in Rate and Extent of Reactions for Grade 12 Physical Sciences?

The Rate and Extent of Reactions section covers all key concepts from the Grade 12 Physical Sciences CAPS curriculum, including detailed explanations, worked examples, and exam preparation tips.

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Our Rate and Extent of Reactions notes are CAPS-aligned and include worked examples, common mistakes to avoid, and exam tips — everything you need to prepare for your Grade 12 Physical Sciences exams.

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