Process
Edexcel A-Level Chemistry 9CH0
Atomic Structure and the Periodic Table
Bonding and Structure
Inorganic Chemistry and the Periodic Table
Topic overviewFlame tests and how they workThermal decomposition of nitrates and carbonatesCarrying out flame tests and testing the gasesGroup 2 elements and their compoundsTrends in Group 7 and predicting fluorine and astatineHalogen displacement reactionsDisproportionation and the reactions of chlorineHalides with concentrated sulfuric acid, and the hydrogen halidesTesting for halide ions with silver nitrateTesting for carbonate and hydrogencarbonate ionsTesting for sulfate and ammonium ions
Formulae, Equations and Amounts of Substance
Topic overviewThe mole, molar mass and empirical formulaThe ideal gas equation and molar volumeEquations, concentration and reacting quantitiesStandard solutions, titration and uncertaintyPercentage yield, atom economy and acid reactionsCore practicals 1 to 3Empirical formula and water of crystallisation by experimentApparatus, uncertainty and mathematical skills
Organic Chemistry I
Topic overviewFormulae, homologous series and functional groupsIUPAC nomenclatureTypes of organic reaction and structural isomerismStereoisomerism and E/Z nomenclaturePractical techniques in organic chemistryAlkanes, crude oil and combustion pollutantsRadical substitutionAlkenes, the double bond and hydrogenationElectrophilic addition, Markovnikov's rule and the test for an alkeneAddition polymers and waste polymersNucleophilic substitution of halogenoalkanesRates of hydrolysis and the SN1 and SN2 mechanismsClassifying and oxidising alcoholsAlcohols: practical techniques and the core practicals
Modern Analytical Techniques I
Energetics I
Kinetics I
Equilibrium I
Acid-Base Equilibria
Energetics II
Redox II
Transition Metals
Topic overviewElectron configuration and what makes a transition metalComplex ions, ligands and the colour of transition metal ionsCoordination number, monodentate ligands and the shapes of complexesBidentate and multidentate ligands, and ligand exchangeVanadium and chromium chemistryReactions with sodium hydroxide and ammoniaCobalt and copper complexesLigand exchange, amphoteric behaviour and the chelate effectTransition metals as catalysts
Kinetics II
Organic Chemistry II
Topic overviewChiralityAldehydes, ketones and their oxidationReduction and nucleophilic addition of HCNTesting for a carbonyl group: 2,4-DNPH and the iodoform reactionCarboxylic acids and their reactionsEsters and acyl chloridesReflux, extraction and recrystallisationDistillation, melting temperature and working safely
Organic Chemistry III
Topic overviewThe structure of benzene and the evidence for itElectrophilic substitution of benzeneNitration, halogenation, Friedel-Crafts and phenolAmines: structure and basicityReactions of amines and preparing themAmides and condensation polymersAmino acids, zwitterions and proteinsEmpirical and molecular formulae from analytical dataGrignard reagents and multi-step synthesisPurification techniques and the aspirin preparation
Kinetics I
- 3 subtopics
- 9 things to know
- Papers 2 and 3
What Kinetics I covers
Covers collision theory and what changes a rate, the Maxwell-Boltzmann distribution and how temperature moves it, and how a catalyst works.
Where it is assessed
Papers 2 and 3
Advanced Organic and Physical Chemistry, then the synoptic paper.
Check the Pearson Edexcel specification ↗The 3 subtopics
Each one has its own page.
- Collision theory and factors affecting rateThe activation energy and correct orientation a successful collision needs, and how raising concentration, pressure and surface area increases the frequency of collisions rather than the proportion that succeed.Open →
- Maxwell-Boltzmann distribution and temperatureRecall questions on the shape of the distribution, on what the area under it represents, and on why a modest temperature rise changes the rate so much.Open →
- Catalysts, reaction profiles and measuring rateHow a catalyst lowers the activation energy, shown on a Maxwell–Boltzmann curve and a reaction profile, heterogeneous and homogeneous catalysts and their economic benefit, defining rate, finding rates from tangents to a concentration-time graph, and following a reaction that gives off a gas.Open →
What you need to know
Answer each one before you reveal it.
Your recallNot started
Process
What does the Maxwell-Boltzmann curve show?
Key term
Why does increasing the pressure of a gaseous reaction increase the rate?
Process
How does the shape of the Maxwell-Boltzmann curve change when temperature is increased?
Process
Does a catalyst change the overall enthalpy change of a reaction?
Key term
What is a heterogeneous catalyst?
Key term
What must happen between particles for a reaction to occur?
Key term
What does the Maxwell-Boltzmann distribution show?
Key term
What is a homogeneous catalyst?
Take Kinetics I further
The same content, four other ways.
Commonly confused
Pairs that lose marks when they are blurred together.
Activation energy vs Enthalpy change
Activation energy: minimum collision energy needed for reaction. Enthalpy change: difference between product and reactant energy levels.
Homogeneous catalyst vs Heterogeneous catalyst
Homogeneous catalyst: catalyst in the same phase as reactants. Heterogeneous catalyst: catalyst in a different phase from reactants.
Reaction rate vs Rate constant
Reaction rate: concentration change per unit time. Rate constant: proportionality factor in a rate equation.
Questions from this topic
Each one with the model answer underneath.
- 1
What must happen between particles for a reaction to occur?
Model answer
Particles must collide with each other.
- 2
Besides colliding, what two conditions must a collision satisfy to be successful?
Model answer
The particles must collide with energy equal to or greater than the activation energy and with the correct orientation.
- 3
What does activation energy mean?
Model answer
The minimum energy that colliding particles must have for a reaction to take place.
- 4
Why does increasing the concentration of a reactant increase the rate of reaction?
Model answer
There are more reactant particles in a given volume, so collisions are more frequent.
- 5
Why does increasing the pressure of a gaseous reaction increase the rate?
Model answer
The gas particles are closer together in a smaller volume, so collisions are more frequent.
- 6
Why does increasing the surface area of a solid reactant increase the rate?
Model answer
More reactant particles are exposed at the surface, so collisions with them are more frequent.
What is inside Levo
Six ways to work the same material.
Kinetics I revision questions
- What does Kinetics I cover in Edexcel A-Level Chemistry?
- 3 subtopics: collision theory and factors affecting rate, maxwell-boltzmann distribution and temperature and catalysts, reaction profiles and measuring rate. Each one has its own page with questions and model answers.
- How is Kinetics I organised?
- By the Edexcel 9CH0 specification, subtopic by subtopic, so it matches the order you are taught it in.
Every question in Kinetics I, on a schedule.
Attempt a question from memory, write the correct version, then attempt it again. Levo records the jump between your first attempt and your last, and brings each question back on the day you are due to forget it.
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