This site is closed down as ALL my old sites are now collected together on my new site at www.docbrown.info/ 

• http://www.docbrown.info/index.htm HOMEPAGE of Doc Brown's Chemistry Clinic

• http://www.docbrown.info/ks3science.htm DocBrown's KS3 SCIENCE QUIZ INDEX

• http://www.docbrown.info/indexcountries.htm  countries of user origin

• http://www.docbrown.info/alpha_index.htm alphabetical index pages

• http://www.docbrown.info/aboutsite.htm How to use the site

• http://www.docbrown.info/sitemapks3.htm   mini-saveable downloaded - run from desktop - KS3 Science site map

• http://www.docbrown.info/sitemapgcse.htm   mini-saveable downloaded - run from desktop - GCSE science-chemistry site map

• http://www.docbrown.info/sitemapadvanced.htm  mini-saveable downloaded - run from desktop - advanced chemistry site map

• http://www.docbrown.info/news.htm   news bulletins suspended at the moment

• http://www.docbrown.info/TopicList.htm  UK equivalent grades in other countries

• http://www.docbrown.info/Elements_List.htm  Element names and atomic numbers

• http://www.docbrown.info/ks3biology/ks3biology.htm  KS3 BIOLOGY QUIZ INDEX

• http://www.docbrown.info/ks3chemistry/ks3chemistry.htm  KS3 CHEMISTRY QUIZ INDEX

• http://www.docbrown.info/ks3intsciquiz/ks3intsciquiz.htm   KS3 integrated/mixed SCIENCE QUIZ INDEX

• http://www.docbrown.info/ks3physics/ks3physics.htm   KS3 PHYSICS QUIZ INDEX

• http://www.docbrown.info/page00/appreciations.htm Appreciations of site users!

• http://www.docbrown.info/page00/wpbCV.htm  

• http://www.docbrown.info/page01/AqueousChem/AqueousChem.htm  Extra GCSE revision notes on water 'based' topics

• http://www.docbrown.info/page01/AqueousChem/solubility.htm  salt solubility data

• http://www.docbrown.info/page01/ReactionTypes/ReactionTypes.htm  Lots of different types of reactions described for GCSE courses

• http://www.docbrown.info/page01/ReactionTypes/ReactionTypesQmc.htm GCSE Science-Chemistry multiple choice quiz on 'types of reaction'

• http://www.docbrown.info/page01/ElCpdMix/EleCmdMix.htm  Three pages of lots of basic chemical ideas from KS3 =>GCSE => AS

• http://www.docbrown.info/page01/ElCpdMix/formula1wf.htm   word-fill on chemical formulae

• http://www.docbrown.info/page01/ElCpdMix/nameQsa.htm GCSE Science Chemistry  type in quiz on naming compounds

• http://www.docbrown.info/page01/ElCpdMix/nameQmc.htm GCSE Science-Chemistry   multiple choice quiz on naming compounds

• http://www.docbrown.info/page01/ElCpdMix/formulaQmc.htm  GCSE Science-Chemistry  multiple choice quiz on formulae

• http://www.docbrown.info/page01/ElCpdMix/nameformulaQmc.htm  multiple choice quiz on formulae and names

• http://www.docbrown.info/page01/ExIndChem/ExIndChem.htm  Extra GCSE Industrial Chemistry Revision Notes

• http://www.docbrown.info/page01/ExIndChem/ExtraElectrochem.htm  Electrolysis-electrochemistry notes

• http://www.docbrown.info/page01/ExIndChem/LimestoneQmcF.htm  GCSE Science-Chemistry  multiple choice quiz on chemistry of limestone and its uses

• http://www.docbrown.info/page01/ExIndChem/LimestoneWF.htm Word-fill worksheet on limestone

• http://www.docbrown.info/page02/page02.htm  other website links

• http://www.docbrown.info/page03/page03.htm  My homepage of GCSE science-chemistry

• http://www.docbrown.info/page03/AT1rates.htm  GCSE coursework help on rates of reaction

• http://www.docbrown.info/page03/3_31rates.htm  GCSE Rates of Reaction revision notes

• http://www.docbrown.info/page03/RiskAssesChem.htm   ideas on risk assessment

• http://www.docbrown.info/page03/ASA2rates.htm   three pages for advanced level chemistry kinetics ('rates of reaction')

• http://www.docbrown.info/page03/3_31rates/3_31ratesQ.htm GCSE multiple choice quiz on Rates of Reaction

• http://www.docbrown.info/page03/3_31rates/8_31ratesJsa.htm  GCSE Science-Chemistry type in word quiz on Rates of Reaction

• http://www.docbrown.info/page03/3_31rates/9_31ratesJwf.htm GCSE Science-Chemistry  word-fill worksheet on Rates of Reaction

• http://www.docbrown.info/page03/3_31rates/11_31ratesJX.htm  GCSE Science-Chemistry crossword puzzle on rates

• http://www.docbrown.info/page03/3_31rates/12_31ratesJmix01.htm ten jumbled sentence exercises on Rates of Reaction

• http://www.docbrown.info/page03/3_31rates/Rates1mp.htm GCSE Science-Chemistry - two rates matching pairs quizzes

• http://www.docbrown.info/page03/3_34ptable.htm  GCSE Periodic Table Revision notes

• http://www.docbrown.info/page03/3_34ptable/PThistoryQ.htm  GCSE periodic table history task sheet

• http://www.docbrown.info/page03/3_34ptable/TSanswers1.htm  GCSE answers to task sheets

• http://www.docbrown.info/page03/3_34ptable/PTintroQ.htm  GCSE Science 'Introduction to the Periodic Table' question

• http://www.docbrown.info/page03/3_34ptable/ptableQmcF.htm  GCSE Science-Chemistry multiple choice quiz on the periodic table

• http://www.docbrown.info/page03/3_51energy.htm   GCSE=>AS Revision notes on Energy Changes in chemistry

• http://www.docbrown.info/page03/3_51energy/3_51energyF.htm  GCSE Science-Chemistry  multiple choice quiz on Energy Changes

• http://www.docbrown.info/page03/3_52states.htm  GCSE Science-Chemistry  notes on States of Matter - particle models etc.

• http://www.docbrown.info/page03/3_52gaslaws.htm  AS advanced level chemistry on Ideal Gas Laws

• http://www.docbrown.info/page03/3_52states/3_52statesQ.htm  GCSE Science-Chemistry  multiple choice quiz on States of Matter - gas, liquid, solid

• http://www.docbrown.info/page03/3_54radio.htm GCSE/AS level revision notes on Radioactivity and Nuclear Power/Reactions

• http://www.docbrown.info/page03/3_54radio/3_54radioQ.htm  GCSE/AS multiple choice quiz on Radioactivity etc.

• http://www.docbrown.info/page03/3_54radio/3_54radioWF1.htm  five wordfill worksheets on Radioactivity etc.

• http://www.docbrown.info/page03/AcidsBasesSalts.htm  GCSE revision notes on pH, Acids, Bases, Salts and neutralisation

• http://www.docbrown.info/page03/AcidsBasesSalts/AcidBaseQmcF.htm   GCSE Science-Chemistry multiple choice quiz on acids, bases, pH etc.

• http://www.docbrown.info/page03/Alkali_Metals.htm   GCSE Science-Chemistry  revision notes the Group 1 Alkali Metals

• http://www.docbrown.info/page03/Alkali_Metals/AlkaliMetalsQmcF.htm  GCSE Science-Chemistry  quiz on Alkali Metals

• http://www.docbrown.info/page03/Noble_Gases.htm   GCSE Science-Chemistry  revision notes on Group 0 Noble Gases

• http://www.docbrown.info/page03/Noble_Gases/NobleGasesQmc.htm   GCSE Science-Chemistry multiple choice quiz on Noble Gases

• http://www.docbrown.info/page03/Reactivity.htm  GCSE revision notes on the Reactivity Series of Metals + rusting + redox reactions

• http://www.docbrown.info/page03/3_33reactivity/ReactivityQmcF.htm  GCSE Science-Chemistry  multiple choice quiz on Reactivity of Metals

• http://www.docbrown.info/page03/3_33reactivity/ReactivityMix1.htm  metal reactivity order quiz

• http://www.docbrown.info/page03/The_Halogens.htm   GCSE revision notes on Group 7 The halogens

• http://www.docbrown.info/page03/The_Halogens/HalogensQmcF.htm  GCSE Science-Chemistry  multiple choice quiz on the halogens

• http://www.docbrown.info/page03/The_Halogens/Halogens1mp.htm  GCSE Science-Chemistry  matching pair quiz on the halogens

• http://www.docbrown.info/page03/The_Halogens/HalogenTaskQ.htm  GCSE Science-Chemistry  structured questions worksheet on the halogens

• http://www.docbrown.info/page04/page04.htm  Homepage for my Advanced Level Chemistry work (GCE, AS, A2, IB etc.)

• http://www.docbrown.info/page04/4_71atom.htm GCSE/AS Atomic Structure revision notes

• http://www.docbrown.info/page04/4_71atom/4_71atomF.htm  multiple choice quiz on atomic structure

• http://www.docbrown.info/page04/4_71atom/Atom1mp.htm  two matching pair quizzes on atomic structure

• http://www.docbrown.info/page04/4_72bond.htm   Introduction to GCSE/AS level pages on Chemical Bonding, Materials and Properties

• http://www.docbrown.info/page04/4_72bond2.htm  Revision notes on ionic bonding

• http://www.docbrown.info/page04/4_72bond3.htm  Revision notes on covalent bonding - small molecules

• http://www.docbrown.info/page04/4_72bond4.htm Revision notes on  giant covalent structures

• http://www.docbrown.info/page04/4_72bond5.htm Revision notes on  metal bonding - structure and properties

• http://www.docbrown.info/page04/4_72bond/4_72bondQ.htm GCSE/basic AS multiple choice quiz on chemical bonding

• http://www.docbrown.info/page04/4_73calcs.htm  GCSE/AS index of all chemical calculations pages and parallel multiple choice quizzes

• http://www.docbrown.info/page04/4_73calcs01ram.htm relative atomic mass calculations

• http://www.docbrown.info/page04/4_73calcs02rfm.htm  relative formula mass calculations

• http://www.docbrown.info/page04/4_73calcs03com.htm  law of conservation of mass calculations

• http://www.docbrown.info/page04/4_73calcs04pbm.htm  percent by mass of elements/components in a compound

• http://www.docbrown.info/page04/4_73calcs05emp.htm  simple empirical formula calculations

• http://www.docbrown.info/page04/4_73calcs06rmc.htm   simple reacting mass calculations

• http://www.docbrown.info/page04/4_73calcs07mam.htm  introduction to mole calculations

• http://www.docbrown.info/page04/4_73calcs07mamANS.htm  answers to some extra advanced level questions on above page

• http://www.docbrown.info/page04/4_73calcs08efm.htm  empirical and molecular formula calculations using moles

• http://www.docbrown.info/page04/4_73calcs09mvg.htm  molar mass and gas volume calculations (molar volume of a gas)

• http://www.docbrown.info/page04/4_73calcs10rgv.htm   reacting gas volume calculations

• http://www.docbrown.info/page04/4_73calcs11msc.htm  molarity and concentrations of solutions calculations

• http://www.docbrown.info/page04/4_73calcs12vct.htm   simple acid-alkali volumetric titration calculations

• http://www.docbrown.info/page04/4_73calcs13pec.htm   Electrolysis calculations

• http://www.docbrown.info/page04/4_73calcs14other.htm  miscellaneous calculations e.g. % yield, atom economy

• http://www.docbrown.info/page04/4_73calcs/COMsaTEST.htm  two quizzes on conservation of mass (sa = type in answer, mc = multiple choice)

• http://www.docbrown.info/page04/4_73calcs/EFMsaTEST.htm  two quizzes on empirical and molecular formula using moles

• http://www.docbrown.info/page04/4_73calcs/EMPmcTEST.htm  two quizzes on simple empirical formula calculations

• http://www.docbrown.info/page04/4_73calcs/MAMsaTEST.htm two quizzes on introduction to moles

• http://www.docbrown.info/page04/4_73calcs/MSCsaTEST.htm  two quizzes on molarity and solution concentration

• http://www.docbrown.info/page04/4_73calcs/MVGsaTEST.htm  two quizzes on mass, moles and gas volumes

• http://www.docbrown.info/page04/4_73calcs/PBMsaTEST.htm  two quizzes on % composition by mass

• http://www.docbrown.info/page04/4_73calcs/PECsaTEST.htm two quizzes on electrolysis calculations

• http://www.docbrown.info/page04/4_73calcs/RAMsaTEST.htm  two quizzes on relative atomic mass

• http://www.docbrown.info/page04/4_73calcs/RFMsaTEST.htm two quizzes on relative formula mass

• http://www.docbrown.info/page04/4_73calcs/RGVsaTEST.htm two quizzes on reacting gas volumes

• http://www.docbrown.info/page04/4_73calcs/RMCsaTEST.htm two quizzes on simple reacting mass calculations

• http://www.docbrown.info/page04/4_73calcs/VCTsaTEST.htm two quizzes on acid-alkali titrations

• http://www.docbrown.info/page04/4_73calcs/calculationsQsaF.htm  GCSE/AS multiple choice quiz on range of calculations

• http://www.docbrown.info/page04/4_74revNH3.htm  GCSE Science-Chemistry  revision notes on Reversible reactions, Ammonia and Nitric Acid

• http://www.docbrown.info/page04/4_74revNH3/revNH3QmcF.htm  multiple choice quiz on reversible reactions, ammonia and nitric acid

• http://www.docbrown.info/page04/4_75trans.htm  GCSE Science-Chemistry  notes on Transition Metals + uses of other metals

• http://www.docbrown.info/page04/4_75trans/4_75transQ.htm multiple choice quiz on Transition Metals

• http://www.docbrown.info/page04/equations/equationsQmc.htm GCSE Quiz on equations in general

• http://www.docbrown.info/page04/Mextract.htm GCSE/AS revision notes on metal extraction

• http://www.docbrown.info/page04/Mextract/MextractQmcF.htm  GCSE multiple choice quiz on Extracting Metals

• http://www.docbrown.info/page04/Mextract/MextractQmcH.htm  harder version of multiple choice quiz above

• http://www.docbrown.info/page04/Mextract/ElectrolysisBasics1mp.htm matching pair quiz on electrolysis

• http://www.docbrown.info/page04/OilProducts.htm  GCSE Science-Chemistry  revision notes on Oil and its useful Products

• http://www.docbrown.info/page04/global warming.htm  GCSE/AS the start of a discussion page on global warming

• http://www.docbrown.info/page04/OilProducts/ExtraOrganic.htm  Extra GCSE Organic Chemistry Notes

• http://www.docbrown.info/page04/OilProducts/ExtraOrganicQmc.htm  multiple-multiple quiz on GCSE organic chemistry! 

• http://www.docbrown.info/page04/OilProducts/OilQmcF.htm  GCSE Science-Chemistry  foundation  multiple choice quiz on Oil etc.

• http://www.docbrown.info/page04/OilProducts/OilQmcH.htm  higher multiple choice quiz on Oil etc.

• http://www.docbrown.info/page04/OilProducts/Oilwf1.htm  three GCSE word-fill worksheets on Oil etc.

• http://www.docbrown.info/page04/OilProducts/Oil1mp.htm matching pair quiz on oil

• http://www.docbrown.info/page04/Y11revQs/ExtractFeAlCuQHT.htm  GCSE structured Q on metal extraction

• http://www.docbrown.info/page04/Y11revQs/acidreactionequationsFH.htm  word equation practice of the reactions of acids

• http://www.docbrown.info/page04/Y11revQs/acidreactionequationsFH2.htm  symbol equation practice of the reactions of acids

• http://www.docbrown.info/page04/Y11revQs/acidreactionequationsFHanswers.htm  answers to GCSE/KS3 acid word equation questions

• http://www.docbrown.info/page04/Y11revQs/acidreactionequationsFHanswers2.htm  answers to GCSE acid symbol equation questions

• http://www.docbrown.info/page04/Y11revQs/structQptableH.htm  GCSE structured question on the Periodic Table

• http://www.docbrown.info/page04/Y11revQs/structQreactivityFH.htm  GCSE structured question on the Reactivity Series of Metals

• http://www.docbrown.info/page05/page05.htm  GCSE/IGCSE multiple choice quizzes, worksheets, crosswords matching pairs quiz etc. etc. index

• http://www.docbrown.info/page05/CombinedTests/MetalsQmcF.htm GCSE combined quiz on metals

• http://www.docbrown.info/page05/CombinedTests/ReactMextractQmcF.htm GCSE combined multiple choice quiz on metal extraction and reactivity series

• http://www.docbrown.info/page06/page06.htm  My AS Salters Advanced Chemistry homepage

• http://www.docbrown.info/page06/OrgMechsIntro.htm six pages on organic reaction mechanisms

• http://www.docbrown.info/page06/AldehydesKetones.htm  structure and naming of aldehydes and ketones

• http://www.docbrown.info/page06/AlkeneStructure.htm  structure and naming of alkenes

• http://www.docbrown.info/page06/PRAlkenes/alkeneQmc.htm multiple choice Quiz on alkene structure and names

• http://www.docbrown.info/page06/PRAlkenes/alkeneQsa.htm

• http://www.docbrown.info/page06/DFalcether.htm   structure and naming of alcohols and ethers

• http://www.docbrown.info/page06/dioltriolcyclo.htm  structure and naming of diols, triols and cyclo-alcohols

• http://www.docbrown.info/page06/DFalcether/DFalcetherQmc.htm multiple choice quiz on structure and naming of alcohols and ethers

• http://www.docbrown.info/page06/DFalkanes.htm   structure and naming of alkanes

• http://www.docbrown.info/page06/DFalkanes/DFalkaneQmc.htm multiple choice quiz on structure and naming of alkanes

• http://www.docbrown.info/page06/DFtests/DFdHquestions.htm   Enthalpy calculations - ΔH combustion and ΔH formation

• http://www.docbrown.info/page06/DFtests/Fuel_Survey.htm Fuel survey

• http://www.docbrown.info/page06/DFtests/DFsaTEST.htm  Salters DF test

• http://www.docbrown.info/page06/ELmcTEST/ELmcTEST.htm Salters EL test

• http://www.docbrown.info/page06/ELmcTEST/ELsaTEST.htm  -

• http://www.docbrown.info/page06/FunctionalGroups.htm Summary of structure and naming of homologous series - functional groups

• http://www.docbrown.info/page06/WMtestsNotes/WMtestQmc.htm Salters WM test

• http://www.docbrown.info/page06/WMtestsNotes/FunGroups01mp.htm five matching pair quizzes on functional groups

• http://www.docbrown.info/page06/WMtestsNotes/aldketQmc.htm  multiple choice quiz on the structure and naming of aldehydes and ketones

• http://www.docbrown.info/page06/molecule_shapes.htm  Study notes on the shapes of molecules and bond angles

• http://www.docbrown.info/page06/Mtestsnotes/ExtraVolCalcs1.htm   Volumetric Calculations e.g. acid-alkali, silver nitrate titrations

• http://www.docbrown.info/page06/Mtestsnotes/MmcTEST.htm  Salters M test

• http://www.docbrown.info/page06/RCOOHderivs.htm  Study revision notes on the naming and structure of carboxylic acids & derivatives

• http://www.docbrown.info/page06/RCOOHderivs/RCOOHderivsQmc.htm multiple choice quiz on  naming and structure of carboxylic acids & derivatives

• http://www.docbrown.info/page06/RCOOHderivs/RCOOHderivsQsa.htm type in short answerversion of above

• http://www.docbrown.info/page06/halogenoalkanes1.htm three study notes pages on the structure and naming of halogenoalkanes

• http://www.docbrown.info/page06/Ahaloalkanes/haloalkaneQmc.htm multiple choice quiz on structure & nomenclature of halogenoalkanes

• http://www.docbrown.info/page06/Amisc/PlanckQ1wf.htm  Planck's Equation question

• http://www.docbrown.info/page06/coursework/OpenBook1.htm Salters Open Book coursework ideas

• http://www.docbrown.info/page07/page07.htm    My A2 Salters Advanced Chemistry homepage

• http://www.docbrown.info/page07/isomerism1.htm  three pages on isomerism in organic compounds

• http://www.docbrown.info/page07/isomerism3.htm examples of isomerism in transition metals complexes

• http://www.docbrown.info/page07/equilibria1.htm eight revision pages on chemical equilibrium, index at top of pages

• http://www.docbrown.info/page07/redox1.htm  three revision pages on redox reactions, indexes at top of pages

• http://www.docbrown.info/page07/ptdata.htm  Summaries of data for Periodic Table Groups and Series

• http://www.docbrown.info/page07/ASA2eledata20.htm  Periodicity plots for elements Z = 1 to 20

• http://www.docbrown.info/page07/sblock.htm  Detailed revision notes s-block Groups 1/2 Alkali/Alkaline Earth Metals

• http://www.docbrown.info/page07/sblockdata.htm  s-block data plots

• http://www.docbrown.info/page07/Aromatics.htm Study notes on the structure and naming of aromatic compounds

• http://www.docbrown.info/page07/Aromatics/AromaticQsa.htm type in name quiz on naming aromatic compounds

• http://www.docbrown.info/page07/EPquestions/EPnmrQ.htm  NMR question

• http://www.docbrown.info/page07/EPquestions/nmr02.htm  NMR chemical shifts 

• http://www.docbrown.info/page07/EPquestions/chiralsANS.htm optical isomerism question  

• http://www.docbrown.info/page07/orgNcmpds.htm   Notes and examples on the structure naming organic nitrogen compounds

• http://www.docbrown.info/page07/orgNcmpds/orgNcmpdsMC.htm  multiple choice Quiz on naming organic nitrogen compounds

• http://www.docbrown.info/page07/orgNcmpds/orgNcmpdsSA.htm  type in name quiz on organic nitrogen compounds

• http://www.docbrown.info/page07/SSquestions/redox_vol_calcs1.htm   Redox volumetric titrations

• http://www.docbrown.info/page07/SSquestions/redox_vol_calcs1ANSequations.htm equations needed for redox titration questions

• http://www.docbrown.info/page08/ElNameSymb/ElNameSymbsa.htm  Element name and symbol quiz (based on list below)

• http://www.docbrown.info/page08/ElNameSymb/NameSymbList.html  List of common element names and symbols

• http://www.docbrown.info/page09/9_71atom/9_71atomJwf.htm  GCSE word-fill on atomic structure

• http://www.docbrown.info/page09/AcBaSalts/AcBaSaltsWF.htm GCSE word-fill on pH, acids, bases salts etc.  

• http://www.docbrown.info/page09/equations/eq01wf.htm Three equation word-fill puzzles

• http://www.docbrown.info/page09/MetalExtraction/MextractWF.htm GCSE Science-Chemistry Metal extraction word-fill

• http://www.docbrown.info/page09/MetalReactRust/MreactivityWF.htm GCSE Science-Chemistry Metal reactivity word-fill 

• http://www.docbrown.info/page09/MetalReactRust/RustingWF.htm GCSE Science-Chemistry Rusting word-fill 1

• http://www.docbrown.info/page09/MetalReactRust/RustingWF2.htm GCSE Science-Chemistry  Rusting word-fill 2

• http://www.docbrown.info/page09/PeriodicTable/ElecSaltWF.htm  GCSE Science-Chemistry Electrolysis word-fill

• http://www.docbrown.info/page09/PeriodicTable/HalogensWF.htm  GCSE Science-Chemistry Group 7 Halogens word-fill

• http://www.docbrown.info/page09/PeriodicTable/NobleGasesWF.htm  GCSE Science-Chemistry Group 0 Noble Gases word-fill  

• http://www.docbrown.info/page09/PeriodicTable/NobleGasesWFANS.htm Noble Gases word-fill answers

• http://www.docbrown.info/page09/PeriodicTable/PeriodicTableWF.htm  GCSE Science-Chemistry big word-fill on the Periodic Table

• http://www.docbrown.info/page09/PeriodicTable/PTshortWF.htm GCSE Science-Chemistry shorter word-fill on the Periodic Table

• http://www.docbrown.info/page09/TransitionMetals/TransitionMetalsWF.htm  GCSE Science-Chemistry Transition Metals word-fill

• http://www.docbrown.info/page10/page10.htm  Index of all GCSE/IGCSE chemistry revision notes

• http://www.docbrown.info/page11/XwordANSgcse.htm  crossword answers

• http://www.docbrown.info/page11/11_54radio/11_54radioXnohint.htm  GCSE Science-Chemistry radioactivity puzzle  

• http://www.docbrown.info/page11/11_71atom/11_71atomJX.htm  GCSE Science-Chemistry atomic structure puzzle

• http://www.docbrown.info/page13/page13.htm   Advanced level chemistry revision notes index

• http://www.docbrown.info/page13/ChemicalTests/ChemicalTests.htm    five pages of qualitative chemical tests

• http://www.docbrown.info/page13/ChemicalTests/GasPreparation.htm  Preparation and collection of gases

• http://www.docbrown.info/page14/page14.htm Advanced level chemistry quiz index

• http://www.docbrown.info/page18/page18.htm My Salters Chemistry Revision Index

• http://www.docbrown.info/page20/page20.htm  index of GCSE/IGCSE syllabus pages

• http://www.docbrown.info/page20/CCEAscience.htm  CCEA Science GCSE Chemistry

• http://www.docbrown.info/page20/WJECscience.htm  WJEC  Science GCSE Chemistry

• http://www.docbrown.info/page20/igcse0620guide.htm  Cambridge extended IGCSE chemistry CIE syllabus 0620cb

• http://www.docbrown.info/page20/CIEigcse0654.htm  CIE IGCSE 0654 chemistry syllabus

• http://www.docbrown.info/page20/CIEolevel5070.htm  CIE 5070 O level chemistry syllabus

• http://www.docbrown.info/page20/scotland.htm   lower/higher certificate chemistry

• http://www.docbrown.info/page20/AQAscience.htm   AQA Science GCSE Chemistry

• http://www.docbrown.info/page20/Edexcel360science.htm  Edexcel 360science Science-Chemistry

• http://www.docbrown.info/page20/OCRappsciDA.htm  OCR Applied Science GCSE Chemistry

• http://www.docbrown.info/page20/OCRsciA21stC.htm  OCR 21st Century Science GCSE Chemistry

• http://www.docbrown.info/page20/OCRsciBgateway.htm OCR Gateway Science GCSE Chemistry

• http://www.docbrown.info/page20/EDEXCELigce.htm  Edexcel O level chemistry syllabus 7081

• http://www.docbrown.info/page20/EDEXCELigce4335.htm  Edexcel IGCSE chemistry syllabus 4335

• http://www.docbrown.info/page20/EDEXCELigce4437_DA.htm  Edexcel IGCSE Science - chemistry of the 4437 syllabus

• http://www.docbrown.info/page21/page21.htm GCSE Science Earth Science Index

• http://www.docbrown.info/page21/GeoChangesANS.htm   Lots of detailed study notes on GCSE Earth Science

• The Widdershins Ceilidh Band (one of the premier bands of North East England

• Castleton County Primary School, North Yorkshire