ALPHABETICAL INDEX E-H

gas-liquid chromatography (glc)/chromatograph/chromatogram - instrumental method of analysis : GCSE-AS gas-liquid chromatography - diagram and analysis explained :

gas-natural-fossil fuel : GCSE oil product fuels :

gas pressure/volume/temperature : GCSE-ADVANCED P-V-T gas calculations, Boyle's/Charles Laws, PV=nRT :

gas syringe : GCSE-ADVANCED (basic) rates of reaction method : KS3-GCSE-AS gas preparation-collection :

gas volume calculations : GCSE-AS mole based examples-Quiz : GCSE-AS Avogadro's Law - reacting volume ratio examples-Quiz : GCSE-AS electrolysis products : GCSE-ADVANCED P-V-T gas calculations :

gases : KS3-GCSE-ADVANCED (basic) kinetic particle theory/ properties/diagrams : GCSE-AS gas preparations and collections : GCSE gas-liquid-solid m/c Quiz : KS3-GCSE-ADVANCED identity tests for :

gasoline : GCSE oil product fuels : GCSE-AS fuel survey ideas :

Gay-Lussac's Law on reacting gas volumes & calculations : GCSE-AS reacting volume ratio examples-Quiz : : GCSE-ADVANCED Gas calculations :

Geiger-Muller counter/probe : GCSE-AS detecting radioactivity :

gel - in water : GCSE example explained :

general formula - organic chemistry - homologous series :GCSE extra organic chemistry : ADVANCED organic homologous series - functional groups summary :

geological earth science : KS3 m/c Quiz : GCSE notes : GCSE foundation m/c Quiz : GCSE higher m/c Quiz :

geometric/geometrical isomerism : ADVANCED definition-detailed notes-examples of E-Z isomerism-stereoisomerism :

germanium, Ge : position and group in periodic table : GCSE-AS metalloid/semi-metal use note :

giant molecules : GCSE-AS covalent bonding notes :

giant structures : GCSE-AS covalent examples and properties : GCSE-AS ionic lattice examples and properties : GCSE-AS metallic lattice examples and properties :

Gibbs free energy, see free energy above

glass : GCSE manufacture : GCSE coloured with transition metal compounds :

glazing pottery : GCSE coloured with transition metal compounds :

glc/gas-liquid chromatography/chromatograph/chromatogram - instrumental method of analysis : GCSE-AS gas-liquid chromatography - diagram and analysis explained :

global warming/climate change/Greenhouse effect : GCSE Greenhouse effect, causes, effects and what we can do? : GCSE more on CO₂/temperature data graphs and discussion points :

global dimming : GCSE compared with global warming :

glucose - natural molecule : GCSE structure :

glues : GCSE thermosetting polymers :

glycerol : GCSE extra organic chemistry :

glycine : GCSE extra organic chemistry :

gneiss - metamorphic rock : GCSE formation :

gold, Au : GCSE-reactivity-reactions involving oxygen/water/acids/displacement :

Graham's Law of diffusion : GCSE-ADVANCED explained - gas calculations :

granite - igneous rock : KS3-GCSE rock formation :

graphic/graphical formula : ADVANCED explained using alkane examples : ADVANCED explained-examples-links homologous series :

graphite, allotrope of carbon : GCSE-AS bonding/structure/properties :

graphs - rates of reaction : GCSE-ADVANCED (basic) notes on rates of reaction data : ADVANCED theory-analysis :

gray : unit of radioactivity :

Greenhouse effect/global warming/climate change : GCSE Greenhouse effect, causes, effects and what we can do? : GCSE more on CO₂/temperature data graphs and discussion points :

Group of the Periodic Table structure : GCSE explanation-examples : ADVANCED Important trends down Groups :

Group 1 The Alkali Metals Li, Na, K etc.: GCSE-data-properties-trends-chemical reactions-uses : GCSE-position in metal reactivity series : GCSE-position in the Periodic Table : ADVANCED-data : ADVANCED detailed notes : AS basic m/c Group 1-1 Quiz : Flame test for alkali metals :

Group 2 The Alkaline Earth Metals Be, Mg, Ca etc. : GCSE-position in metal reactivity series : GCSE-position in the Periodic Table : ADVANCED-data : ADVANCED detailed notes :AS basic m/c Group 1-1 Quiz : Flame test for alkaline earth metals :

Group 3 : ADVANCED Group 3/13 boron and aluminium :

Group 4 : ADVANCED Group 4/14 carbon and silicon :

Group 5 : ADVANCED Group 5/15 nitrogen and phosphorus :

Group 6 : ADVANCED Group 6/16 oxygen and sulfur :

Group 7/17 The Halogens F, Cl, Br, I etc. : GCSE-data-properties-trends-chemical reactions-uses : GCSE-position in the Periodic Table : ADVANCED Inorganic Chemistry Part 9 - Introduction, trends & Group 7/17 Halogens data * 9.2 Halogen displacement reaction and reactivity trend * 9.3 Reactions of halogens with other elements * 9.4 Reaction between halide salts and conc. sulfuric acid * 9.5 Tests for halogens and halide ions * 9.6 Extraction of halogens from natural sources * 9.7 Uses of halogens & compounds * 9.8 Oxidation & Reduction - more on redox reactions of halogens & halide ions * 9.9 Volumetric analysis - titrations involving halogens or halide ions * 9.10 Ozone, CFC's and halogen organic chemistry links * 9.11 Chemical bonding in halogen compounds * 9.12 Miscellaneous aspects of halogen chemistry

Group 0/18 The Noble Gases He, Ne, Ar etc. : GCSE-properties-trends-uses : GCSE-position in the Periodic Table : ADVANCED data :

Group trends physical/chemical properties : GCSE Gp 1 alkali Metals : GCSE Gp 7 Halogens : ADVANCED Gp1/2 Notes on Alkali/Alkaline Earth metals :

gypsum, calcium sulphate : GCSE ??

H... index

Haber Process : GCSE-AS as type of reaction : GCSE full details-ammonia production-uses-chemistry : ADVANCED equilibrium-reaction conditions-manufacture: ADVANCED mathematical modelling of Haber Synthesis :

haematite, iron oxide ore : GCSE-AS extraction of iron :

haemoglobin : ADVANCED Protein structure and function :

hafnium, Hf :

hair colouring products : hair colouring products as an example of the science of formulation chemistry :

half-cell equations (ionic)/potentials : GCSE-AS in electrolysis : GCSE in metal extraction/plating by electrolysis : ADVANCED detailed theory notes-examples on inorganic/organic redox reactions, oxidation state/number analysis, constructing equations from half-cell reactions (sub-indexes provided) : ADVANCED The principles of redox equilibria, half-cell potentials, cells etc. explained

half-life - calculations : GCSE-AS radioactive isotopes-definition-calculations : ADVANCED1st order kinetics :

halogenoalkanes (haloalkanes, alkyl halides, e.g. chloroalkanes, RX, X=Cl,Br,I) : ADVANCED structure/naming/classification/including cyclo-/polysubstituted : ADVANCED summary of functional group/homologous series structure : ADVANCED Tests for : ADVANCED nucleophilic substitution mechanism for H₂O, OH, CN, NH₃ and R-NH₂ : ADVANCED kinetics case study : ADVANCED elimination of HBr mechanism : ADVANCED naming m/c Quiz : ADVANCED Type in name Quiz : ADVANCED intermolecular forces and boiling points of halogenoalkanes compared to other organic molecules :

Halogens, of Group 7 : GCSE-data-properties-trends-chemical reactions-compounds-uses : GCSE task sheet : ADVANCED-data : : GCSE word-fill worksheet : Tests for halogens - chlorine/bromine/iodine : : ADVANCED-redox part 1 theory of halogen displacement reactions and also example in redox part 2 :

hardness of water : GCSE explained-examples and soft/temporary types-treatments

harmful : KS3-GCSE hazard warning sign/symbol-meaning :

hassium, Hs :

hazard warning signs/symbols : pictures-meaning :

HCFC (hydrochlorofluorocarbons, HCFCs) : ADVANCED structure- naming :

HFC (hydrofluorocarbons, HFCs) : ADVANCED structure- naming :

heat changes : GCSE energy changes in physical/chemical changes :

heat/thermal conduction : GCSE-AS element properties : GCSE-AS metal structure :

heating/cooling curves - state changes : KS3-GCSE graphs explained : GCSE g/l/s states m/c Quiz :

heating under reflux : ADVANCED in organic preparations :

helium, He, in Group 0/8 The Noble Gases : GCSE-properties-uses : ADVANCED data : ADVANCED member of Period 1 of Periodic Table :

Henry's Law : ADVANCED solubility of gases :

heptane(s) : ADVANCED structures-names :

heptene(s) : ADVANCED structures-names :

herbicides : herbicides as an example of the science of formulation chemistry :

Hess's Law thermochemical calculations: ADVANCED Thermodynamics Part 1 thermochemistry - enthalpies of reaction, formation, combustion :

heterolytic bond fission : ADVANCED explained organic reaction mechanisms :

heterogeneous catalysis : ADVANCED explained-examples :

hexane (and hexanes) : ADVANCED homologous series : ADVANCED examples :

hexene (and hexenes) : ADVANCED homologous series : ADVANCED examples :

higher/lower ... : ADVANCED Term used in organic homologous series :

highly flammable : KS3-GCSE hazard warning sign/symbol :

holmium, Ho :

homogeneous catalysis : ADVANCED explained-examples :

homologous series - functional groups - organic chemistry : GCSE extra organic chemistry : ADVANCED explained using alkane examples : ADVANCED organic homologous series - functional groups summary :

homolytic bond fission : ADVANCED explained organic reaction mechanisms :

horizontal row of Periodic Table : see Period :

Hund's Rule : ADVANCED electron configurations :

hydrated ... ('with water') : GCSE salts - water of crystallisation :

hydration reaction : GCSE explanation-examples : GCSE addition of water to ethene => ethanol/'alcohol' : ADVANCED addition of water to alkenes-mechanism :

hydrides : ADVANCED covalent hydrides and hydrogen bonding :

hydrocarbons : GCSE structure-oil products : GCSE extra organic chemistry-more on structure and reactions : ADVANCED alkanes-structure-naming : ADVANCED alkenes-structure-naming : ADVANCED aromatic-arenes : ADVANCED aliphatic/aromatic-structure-homologous series :

hydrochloric acid HCl_(aq) : GCSE uses-manufacture : GCSE reactions with metals/oxides/hydroxides/carbonates/ammonia : GCSE reaction with metals-reactivity series : GCSE electrolysis experiments : ADVANCED use in volumetric titrations :

hydrochlorofluorocarbons, HCFC's : ADVANCED structure and naming :

hydrofluorocarbons, HFCs : ADVANCED structure and naming :

hydrogen, H, H₂ : GCSE H₂ gas preparation and collection : GCSE position in periodic table : GCSE-AS molecule-bonding : ADVANCED member of Period 1 of Periodic Table :

hydrogen bonding : ADVANCED in protein and structure : ADVANCED effect on vapour pressure, intermolecular forces and boiling points of inorganic/organic compounds, examples and evidence/theory of hydrogen bonding :

hydrogen bromide, HBr_(g) : GCSE-AS molecule-bonding : GCSE notes on Gp 7 Halogen compounds : ADVANCED addition to alkenes-mechanism :

hydrogen carbonate : see hydrogencarbonates

hydrogen chloride, HCl_(g) : GCSE HCl gas preparation and collection : GCSE notes on Gp 7 Halogen compounds : GCSE manufacture and conversion to hydrochloric acid : GCSE-AS molecule-bonding :

hydrogen cyanide, HCN : GCSE formed by burning plastics : ADVANCED addition to aldehydes/ketones mechanism :

hydrogen electrode (standard) : ADVANCED explained (also use top 7. sub-index) :

hydrogen fluoride, HF_(g) : GCSE-AS molecule-bonding :

hydrogen halides, HX (X=F, Cl, Br or I) : GCSE notes on Gp 7 Halogen compounds : ADVANCED addition to alkenes-mechanism :

hydrogen iodide, HI_(g) : GCSE-AS molecule-bonding : GCSE notes on Gp 7 Halogen compounds : ADVANCED addition to alkenes-mechanism (treat as HBr) : ADVANCED hydrogen-iodine-hydrogen iodide equilibrium :

hydrogen ion, H⁺_(aq), oxonium ion, H₃O⁺_(aq) :GCSE acid-base reactions : GCSE acid-base more theory : GCSE-AS electrolysis-electrode reactions :

hydrogen peroxide, H₂O₂ : GCSE catalysed decomposition : ADVANCED Titration with potassium manganate(VII) calculations :

hydrogen spectrum : ADVANCED notes on hydrogen spectrum :

hydrogen sulphide, H₂S_(g) : GCSE-AS molecule-bonding : ADVANCED molecule shape, bond angle, dot & cross electronic diagram : ADVANCED oxidation by KMnO₄ :

hydrogenation, H₂ addition to alkene : GCSE alkene=>alkane : GCSE-ADVANCED (basic) margarine production and structure :

hydrogenated fats : GCSE-ADVANCED (basic) margarine production and structure :

hydrogencarbonates, HCO₃^- : GCSE reactions with acid : ADVANCED detailed chemistry :

hydrolysis : GCSE of some natural molecules-extra organic chemistry : ADVANCED in organic chemistry-links to example mechanisms : ADVANCED halogenoalkanes-kinetics : ADVANCED esters-kinetics :

hydroxide ion, OH^-_(aq) : GCSE acid-base theory : GCSE acid-base reactions : GCSE-AS electrolysis-electrode reactions :

hydroxides : GCSE-KS3 soluble (alkalis)-insoluble-reactions with acids-formulae : GCSE-AS thermal decomposition : ADVANCED detailed Gps 1-2 notes : ADVANCED Hydroxide complex precipitate 'pictures', formulae and equations :

hygroscopic : KS3-GCSE-AS explained-examples :

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