Key term
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
Formulae, Equations and Amounts of Substance
Core practicals 1 to 3
- 3 things to know
- Papers 1, 2 and 3
Overview
The steps of Core Practical 1 measuring the molar volume of a gas, Core Practical 2 making a standard solution of a solid acid to find the concentration of sodium hydroxide, and Core Practical 3 titrating to find the concentration of hydrochloric acid.
What you need to know
Answer each one before you reveal it.
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Key term
What is calculated from the titration data in Core Practical 3?
Key term
In Core Practical 1 (molar volume of a gas), what is the first step?
Questions from this subtopic
Each one with the model answer underneath.
- 1
In Core Practical 1 (molar volume of a gas), what is the first step?
Model answer
React a known mass of reactant to produce a gas.
- 2
How is the gas collected in the molar volume experiment?
Model answer
Using a gas syringe or by collecting over water.
- 3
After collecting the gas in Core Practical 1, what measurement is taken?
Model answer
Measure the volume of gas collected.
- 4
How are the moles of gas determined in the molar volume experiment?
Model answer
Calculate moles of gas from the stoichiometry of the reaction.
- 5
State the formula used to calculate molar volume from experimental data.
Model answer
Vₘ = V/n, where V is the volume of gas and n is the moles of gas.
- 6
In Core Practical 2, what is the first step in preparing the standard solution?
Model answer
Accurately weigh the solid acid.
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