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 Doc Brown's Advanced Level Chemistry

WJEC Welsh Advanced Subsidiary GCE AS Level CHEMISTRY course

Syllabus-specification A2 Chemistry Unit CH1

A2 Chemistry Units 3-5 on A2 page = 2nd year of full A Level

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ALL my advanced A level chemistry revision study notes

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A2/AS Unit 1 The language of chemistry, structure of matter and simple reactions (WJEC A2/AS level chemistry)

1.1 Formulae and equations

1.2 Basic ideas about atoms

1.3 Chemical calculations

1.4 Bonding

1.5 Solid structures

1.6 The Periodic Table

1.7 Simple equilibria and acid-base reactions


A2/AS Unit 2 Energy, rate and chemistry of carbon compounds (WJEC A2/AS level chemistry)

2.1 Thermochemistry

2.2 Rates of reaction

2.3 The wider impact of chemistry

2.4 Organic compounds

2.5 Hydrocarbons

2.6 Halogenoalkanes

2.7 Alcohols and carboxylic acids

2.8 Instrumental analysis


A2/AS Unit 1 The language of chemistry, structure of matter and simple reactions (WJEC A2/AS level chemistry)

1.1 Formulae and equations (WJEC A2/AS level chemistry)

Introducing oxidation state: rules–guidelines, inorganic examples, naming inorganic compounds

How to write equations, work out formula and name compounds


1.2 Basic ideas about atoms (WJEC A2/AS level chemistry)

Atomic Structure Notes

Radioactivity and Nuclear Power - The structure of atoms linked to the properties and uses of alpha, beta and gamma radiation, radioisotope dating, half-life.  Sub-index and keywords at top of page

Radioactivity and nuclear processes multiple choice Quiz Covers everything for A level chemistry

Revision notes on all you need to know on ATOMIC STRUCTURE for advanced level

Electronic Structure of atoms -  s p d f orbitals - electronic basis of periodic table

Electron configurations of elements (Z = 1 to 56), ions and the Periodic Table

Spectroscopy, hydrogen spectrum, evidence of quantum levels, ionisation energy patterns


1.3 Chemical calculations (WJEC A2/AS level chemistry)

GCSE Atomic Structure Notes including mass spectrometry of elements - the structure of atoms, isotopes, nuclear structure notation, 'simple' electronic structure and the Periodic Table and mass spectrometry for isotope analysis and calculation of relative atomic mass (Ar) and measurement of molecular mass (Mass spectrometry is on a sub-page)

Chemical Calculations index - 1. to 16. sections of explanation-examples and multiple choice and type in answer quizzes links are built into the notes, designed up to higher GCSE and basic GCE-AS/IB calculations

section 1. Relative atomic mass (Ar) and isotopic mass

section 2. Relative formula mass and relative molecular mass (Mr)

section 3. Law of Conservation of Mass and simple reacting mass calculations

section 4. % composition by mass of a compound

section 5. Empirical formula from reacting masses

section 6. Reacting masses of reactants and products and actual percent % yield, theoretical yield and atom economy

section 7. Introducing moles - the connection of moles, mass and formula mass

(c) doc b section 8. Using moles to deduce empirical/molecular formula of a compound/molecule starting with reacting masses or % composition by mass

section 9. moles and molar gas volume and Avogadro's Law

section 14. % actual and theoretical yield, dilution calculations, atom economy, volumetric titration apparatus, water of crystallisation, how much of reactants are needed? (sub-index near top of page)

P-V-T pressure-volume-temperature gas law calculations

The ideal gas equation PV=nRT and use in calculations


1.4 Bonding (WJEC A2/AS level chemistry)

INDEX of all my CHEMICAL BONDING notes

Why is knowledge of chemical bonding & structure so important?

Introduction to chemical bonding - why? how? and patterns

Ionic Bonding: compounds and properties

Covalent Bonding: small molecules & properties

Electronegativity, bond polarity, type of chemical bonding

Introduction - VSEPR theory - lots of inorganic molecule/ion examples

Some other molecules/ions of carbon, nitrogen, sulphur and chlorine

shapes and bond angles of organic molecules


1.5 Solid structures (WJEC A2/AS level chemistry)

More on ionic structures and ionic bonding

Giant covalent structures and other big molecules

Types of Crystal Structure and their relative physical properties

Metallic Bonding – structure and properties of metals


1.6 The Periodic Table (WJEC A2/AS level chemistry)

GCSE Summary notes of the Periodic Table - A basic introduction: Explanation and overview of Groups, Periods, Series etc. with links to more detailed notes on the Group 1 Alkali Metals, Group 7 Halogens, Group 0 Noble Gases and Transition Metals.

Periodic Table Advanced Inorganic Chemistry Notes Part 1 "Historical Introduction" and the full modern periodic table

Periodic Table Advanced Inorganic Chemistry Notes Part 2 "Electronic Structure and Ionisation Energies" - Electron arrangements - electron configurations and the Periodic Table - s, p, d and f blocks

click me! Data-periodicity graphs for elements Z = 1 to 20 = Period 1, Period 2, Period 3 and start of Period 4

 periodicity graph for elements Z = 1 to 38 = Period 1, Period 2, Period 3, Period 4 and start of Period 5

INDEX and INTRODUCTION to s-block Group 1 Alkali Metals and Group 2 Alkaline Earth Metals

Qualitative Analysis: Chemical Identity Tests - anions e.g. non-metal negative ions (keyword alphabetical index at top of page)

Qualitative Analysis: Chemical Identity Tests - cations e.g. positive metal ions (keyword alphabetical index at top of page)

Part 9 p-block Group 7/17 The Halogens (9 linked pages, use sub-index for sections 9.1 to 9.12 to find what you need)


1.7 Simple equilibria and acid-base reactions (WJEC A2/AS level chemistry)

 Starter GCSE Notes on reversible reactions and equilibrium and Le Chatelier's Principle

Advanced Chemistry Equilibria Part 1. Dynamic molecular equilibrium and Le Chatelier's principle

Notes on Acids, Bases, Alkalis, pH, Neutralisation and Salts - includes theory, lots of formulae and word and balanced symbol equations, salt preparations and equations.

Aqueous Chemistry Notes - more on acid-base theory Sub-index at top of page

section 11. Making up solutions - concentration & molarity

section 12. Volumetric acid-alkali titration easy calculations - apparatus/analysis

Structured Question worksheet including acid-base volumetric titration calculations (worked out answers included!)


A2/AS Unit 2 Energy, rate and chemistry of carbon compounds (WJEC A2/AS level chemistry)

2.1 Thermochemistry (WJEC A2/AS level chemistry)

Basic notes of exothermic and endothermic reactions and calculation of enthalpy changes from 'simple' calorimetry experiments and resulting data

Thermodynamics Part 1: Thermochemistry - Calorimetry experiments - Enthalpies of reaction, formation, combustion and bond dissociation are explained with exemplar calculations (6 linked pages and their sub-index)

click me! Enthalpy and Bond Energy Calculation Questions  (worked out answers included!)


2.2 Rates of reaction (WJEC A2/AS level chemistry)

GCSE Notes for the basics of rates of reactions - kinetics

KINETICS - advanced rates of reactions revision notes: temperature effect and activation energy, homogeneous catalysts and heterogeneous catalysts, obtaining data (does include more than you need for WJEC CH1)


2.3 The wider impact of chemistry (WJEC A2/AS level chemistry)

You should be able to demonstrate and apply their knowledge and understanding of:

(a) social, economic and environmental impact of chemical synthesis and the production of energy

Chemical & Pharmaceutical Industry Economics & Sustainability - Life Cycle Assessment

Complete and incomplete combustion of alkanes and environmental pollution

Fossil fuel air pollution - incomplete combustion, carbon monoxide & soot particulates

Greenhouse effect, global warming, climate change, carbon footprint from fossil fuel burning

Fossil fuel air pollution - effects of sulfur oxides and nitrogen oxides

(b) role of green chemistry in improving sustainability in all aspects of developments


2.4 Organic compounds (WJEC A2/AS level chemistry)

A summary of homologous series, functional group names and structure in Organic Chemistry

The Molecular Structure and Nomenclature of ALKANES

Revision notes on the structure and naming of ALKENES (including cyclo- and many isomers

Molecular Structure and Nomenclature of HALOGENOALKANES (haloalkanes)

Revision notes on the structure and naming (nomenclature) of aliphatic ALCOHOLS including some isomeric ethers

Structure and naming of CARBOXYLIC ACIDS and DERIVATIVES, including nomenclature of isomers

An Introduction to organic chemical reaction mechanisms and technical terms explained

Organic Chemistry ISOMERISM general definition and structural isomerism (sub-index at top of page)

Introduction to Intermolecular Forces

Detailed comparative discussion of boiling points of 8 organic molecules

Boiling point plots for six organic homologous series

Other case studies of boiling points related to intermolecular forces


2.5 Hydrocarbons (WJEC A2/AS level chemistry)

INDEX of ALL revision notes on the chemistry of ALKANES and the petrochemical industry

INDEX of ALL revision notes on the chemistry ALKENES including reactions and polymers

Multiple choice Quiz on the structure and naming (nomenclature) of alkanes

Type in name Quiz on the structure & naming of ALKANES (and nomenclature of cycloalkanes)

STEREOISOMERISM general definition, E/Z (geometric/geometrical cis/trans) isomerism

Multiple choice Quiz on the Structure and naming (nomenclature) of ALKENES

Type in name Quiz on the nomenclature of ALKENES

 MECHANISM Introduction and terms used in organic chemistry (on the mechanism pages the type of reaction, basic reaction equations and conditions are quoted which may act as a suitable reference, there is also a reaction index on each page)

 Mechanism of the free radical chlorination/bromination of alkanes to make halogenoalkanes

 Mechanism of electrophilic addition of hydrogen bromide to alkenes to make bromoalkanes (introduction and example of electrophilic addition to alkenes) (includes reagents, reaction conditions and exemplar balanced equations showing product formation even if you don't need all the mechanistic details)

 Mechanism of electrophilic addition of bromine to alkenes with pure bromine to make dibromoalkanes  (includes reagents, reaction conditions and exemplar balanced equations showing product formation even if you don't need all the mechanistic details)

Alkanes and Petrochemical Industry INDEX

1.1 The Molecular Structure and Nomenclature of Alkanes

1.2 Fractional distillation of crude oil and uses of products

1.3 Modification of alkanes by cracking, isomerisation and reforming

1.4 Complete and incomplete combustion of alkanes and environmental pollution

1.5 Modification of hydrocarbon fuel mixtures and alternative fuels

1.6 Chlorination and bromination of alkanes, reaction mechanisms and uses of products


2.6 Halogenoalkanes (WJEC A2/AS level chemistry)

INDEX of ALL revision notes on HALOGENOALKANES (haloalkanes)

 Mechanism of the free radical chlorination/bromination of alkanes to make halogenoalkanes

Revision notes on the structure and naming of HALOGENOALKANES/HALOALKANES

Multiple choice Quiz on the structure and naming (nomenclature) of HALOGENOALKANES (haloalkanes)

Type in name Quiz on the nomenclature of HALOGENOALKANES (haloalkanes)

 Mechanism: Halogenoalkanes (haloalkanes/alkyl halides) Nucleophilic substitution by water/hydroxide ion [SN1 or SN2, hydrolysis to alcohol] (introduction to, and example of, nucleophilic substitution in halogenoalkanes) (includes reagents, reaction conditions and exemplar balanced equations showing product formation even if you don't need all the mechanistic details)


2.7 Alcohols and carboxylic acids (WJEC A2/AS level chemistry)

INDEX of all revision notes on ALCOHOLS (and mention of ethers)

Revision notes on the structure and naming (nomenclature) of aliphatic ALCOHOLS - Classification into primary (prim), secondary (sec) and tertiary (tert) - notes include isomers and other related compounds which may not be needed

Multiple choice Quiz on the structure and naming (nomenclature) of aliphatic ALCOHOLS (includes ethers which may not be needed)

Type in name Quiz on the nomenclature of aliphatic ALCOHOLS (includes ethers which may not be needed)

GCSE Organic Chemistry Notes - introductory section on alcohols like ethanol

 Mechanism: Halogenoalkanes (haloalkanes, alkyl halides) Elimination of hydrogen bromide to give an alkene (mechanism NOT needed but includes reagents, reaction conditions and exemplar balanced equations showing product formation)

Organic synthesis redox reactions - including oxidation of alcohols (use top summary table index)

INDEX of all revision notes on CARBOXYLIC ACIDS and DERIVATIVES


2.8 Instrumental analysis (WJEC A2/AS level chemistry)

Index of all spectroscopy pages and introduction to the interaction of emr with matter and calculations

Introduction to mass spectrometry

Index of mass spectroscopy notes - examples of mass spectrometry of organic compounds

Index of infrared spectroscopy notes - analysis of infrared spectra of organic compounds

Index of nuclear magnetic resonance spectroscopy 1H NMR spectra of organic compounds

Index of nuclear magnetic resonance spectroscopy 13C NMR spectra of organic compounds


WJEC GCE CHEMISTRY PAST PAPERS

https://revisionscience.com/a2-level-level-revision/chemistry-level-revision/chemistry-level-past-papers/wjec-level-chemistry-past-papers from 2014 2015 2016 2017 2018 2019

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