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
Organic Chemistry III
Grignard reagents and multi-step synthesis
- 3 things to know
- Papers 2 and 3
Overview
Recall questions on preparing and using a Grignard reagent, on how it lengthens a carbon chain, and on planning a route between two functional groups.
What you need to know
Answer each one before you reveal it.
Your recallNot started
Process
Explain how Grignard reagents are useful for increasing carbon chain length.
Process
When planning a multi-step organic synthesis of up to four steps, what must be identified first?
Questions from this subtopic
Each one with the model answer underneath.
- 1
When planning a multi-step organic synthesis of up to four steps, what must be identified first?
Model answer
The functional group transformations needed to convert the starting material to the product.
- 2
After identifying functional group transformations in a synthesis plan, what must be selected for each step?
Model answer
Appropriate reagents and conditions for each transformation.
- 3
Describe how a Grignard reagent is prepared.
Model answer
By reacting a halogenoalkane with magnesium metal in dry ether.
- 4
In the reaction of a Grignard reagent with CO₂, what happens in the first stage?
Model answer
The Grignard reagent attacks the electrophilic carbon atom of CO₂, forming a carboxylate intermediate.
- 5
What is the role of acid hydrolysis in the reaction of a Grignard reagent with CO₂?
Model answer
It protonates the carboxylate intermediate to release the free carboxylic acid product.
- 6
What type of alcohol is formed when a Grignard reagent reacts with an aldehyde (other than methanal) followed by acid hydrolysis?
Model answer
A secondary alcohol.
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