Student Details
Syllabus Objectives Covered
- Describe how concentration, pressure, surface area, temperature and catalysts affect rate of reaction.
- Explain rate changes using collision theory, including collision frequency, kinetic energy and activation energy.
- Describe and evaluate practical methods for investigating rates, including change in mass and gas formation.
- Interpret data and graphs from rate experiments.
- State that reversible reactions use the symbol ⇌ and explain dynamic equilibrium in a closed system.
- Predict how changing temperature, pressure and concentration affects equilibrium position.
- State typical conditions for the Haber process and Contact process.
- Define oxidation and reduction using oxygen transfer, electron transfer and oxidation number changes.
- Identify oxidising and reducing agents in redox reactions.
Core Toolkit
Collision theory
Particles must collide with enough energy and correct orientation to react.
Particles must collide with enough energy and correct orientation to react.
Activation energy
The minimum energy particles need for a successful collision.
The minimum energy particles need for a successful collision.
Catalyst
Increases rate by lowering activation energy and remains chemically unchanged.
Increases rate by lowering activation energy and remains chemically unchanged.
Dynamic equilibrium
Forward and reverse reactions happen at the same rate in a closed system.
Forward and reverse reactions happen at the same rate in a closed system.
OIL RIG
Oxidation Is Loss of electrons. Reduction Is Gain of electrons.
Oxidation Is Loss of electrons. Reduction Is Gain of electrons.
Oxidation number
Oxidation is an increase; reduction is a decrease.
Oxidation is an increase; reduction is a decrease.
Concept Overview
Rate of reaction
Rate increases when successful collisions happen more frequently. Higher temperature, concentration, pressure and surface area usually increase rate.
Equilibrium
In a closed system, equilibrium is reached when forward and reverse rates are equal.
N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
Redox
Oxidation and reduction occur together. One substance is oxidised while another is reduced.
Oxidation = loss of electrons
Embedded Video Learning Stations
1. Factors Affecting Rate and Collision Theory
2. Measuring Rates of Reaction
3. Reversible Reactions and Dynamic Equilibrium
4. Le Chatelier's Principle
5. Redox Reactions
6. Haber and Contact Processes
Videos are embedded using YouTube embed links. Teachers should preview videos before classroom use.
Guided Notes
30-Mark Manual Practice
Answer all parts. Your responses will be sent to the backend sheet for manual marking by your teacher.