Mar 4th 2010: Re-edit of States of Matter PART 1 - particle theory - gases, liquids & solids GCSE study revision notes and States of Matter PART 2 - Gas Law Calculations, Ideal gases etc. (includes some A level topics)

Feb 9th 2010: Re-edit of Theoretical Chemistry Equilibrium 4. Partition equilibria, solubility product and ion exchange 4.1 Partition between two phases * 4.2 Solubility product K_sp and common ion effect * 4.3 Ion-exchange systems

Feb 9th 2010: Re-edit of Theoretical Chemistry - Equilibria - Chemical Equilibrium Part 7. Redox equilibria, standard half-cell electrode potentials and electrolysis: 7.1 Half cell equilibria, electrode potential * 7.2 Simple cells notation and construction * 7.3 The hydrogen electrode and standard conditions * 7.4 Half-cell potentials, Electrochemical Series and using E^θ_cell for reaction feasibility * 7.5 Electrochemical cells ('batteries') and fuel cell systems * 7.6 Electrolysis and the electrochemical series * 7.7 Exemplar Questions, Appendix 1. The Nernst Equation, Appendix 2 Free Energy, Cell Emf and K

Feb 4th: Major re-edit of RADIOACTIVITY PAGES 1a. The Structure of Atoms - 3 fundamental particles * 1b. What it is an atom like? * 2a. What is Radioactivity? Why does it happen? * 2b. How did they find out there were three types of atomic-ionising radiation? * 3a. Detection of Radioactivity and its measurement, units * 3b. Ionising Radiation sources * 4a. The properties of the three types of radioactive emission and symbols * 4b The dangers of radioactive emissions - beware of ionising radiation from radio-isotopes! * 5. The uses of radioactive Isotopes emitting alpha, beta or gamma radiation * 6a. The half-life of a radioisotope - how long does material remain radioactive? implications! * 6b. Uses of decay data and half-life values * 7a. What actually happens in alpha and beta radioactive decay? * 7b. The production of Radioisotopes - artificial sources * 8. Nuclear fusion reactions and the formation of 'heavy elements' * 9. Nuclear Fission Reactions, nuclear power energy resource

Feb 2nd 2010: Major re-edit of KS4 Science GCSE/IGCSE Chemistry pages on Metal Extraction 1. Introduction to Metal Extraction * 2. Extraction of Iron and Steel Making * 3. Extraction of Aluminium and Sodium * 4. Extraction and Purification of Copper * 5. Extraction of Zinc, Titanium and Chromium * 6. Economic & environmental Issues - metal extraction but should also prove useful for A level students.