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Brown's School Science Revision Notes and Quizzes Website
WEBSITE HOMEPAGE of Dr Phil Brown GRIC, PhD Chemistry - INDEX 'SITEMAP' Download a PDF file version of this main index page for ALL convenient science links This PDF file essentially acts as an App file and all the www links should work. Download the PDF file to desktop, [my files], [cloud] etc. etc. The [SEARCH] box does NOT work from the pdf file, only on the xxx.htm web pages. DISCLAIMER: I do my very best to check all my writing, but I am not perfect and there may be a very tiny chance of an error or a 'silly' typo. If you think something is wrong, email chem55555@hotmail.com immediately and I will immediately rectify any error. I am NOT responsible for your exam grade, but I hope my science website helps you and good fortune in your studies. BUT, I do my best: The mediocre teacher tells. The good teacher explains. The superior teacher demonstrates. The great teacher inspires. Quote from William Arthur Ward "Thinking minds" Scroll down to find your academic level and science based course 1. Lower secondary school level science
2. UK GCSE level science revision notes
and revision notes help links suitable for UK based science courses: AQA, Edexcel, OCR (Gateway & 21st C) 9-1 GCSE Sciences Revision Notes links (also listed below) GCSE 9-1 Chemistry Topic Quizzes to match above specification links (links also on specific pages too) Cambridge International IGCSE: biology * chemistry * physics * double award sciences Edexcel International GCSE: biology * chemistry * physics * double award science Oxford AQA International GCSE: biology * chemistry * physics * combined science double award WJEC CBAC GCSE sciences: biology * chemistry * physics * double award science (Welsh exam board) CCEA CEA GCSE sciences biology * chemistry * physics * double award science (Northern Ireland) 3. Advanced pre-university/college Chemistry
4. Other important links
Whitby Community College Science Department 1993, Whitby, North Yorkshire, England (photo © Keith Deason, Whitby, North Yorkshire, England) Mike Harrison (chemistry), Keith 'tech' Deason, Phil Brown ('Doc Brown' with beard, chemistry & physics), Roger Parsons (biology), Mike Rothwell (science), Effie Andrews (science), Alan Bentley (physics) John Verrill (electronics), Shirley the chief 'tech', Sue Spencer (biology), Pete Wallace (physics), Nick Pike (biology), Joan Lister (physics) ≈ RE-EDITED PAGES 2026 For Doc Brown's re-editing reference only July 20th * waves-intro-index - waves-into-03 * waves-intro-10 *July 21st isomers of C6H14 * isomers of C4H8O2 July 22nd food tests * July 24th isomers of molecular formula C6H10 * mass spectra of organic compounds * ir spectrum benzaldehyde * mass spectrum benzaldehyde * 1H NMR spectrum of benzaldehyde * 13C NMR spectrum of benzaldehyde July 25th microscopy-index * (1) Microscopes - uses, history and development (2) The design, function and use of an optical light microscope and slide preparation (3) Examples of using a microscope, scale drawing your microscope slide observations (4) Examples of numerical calculations in microscopy - magnification and magnifying power of a microscope and measuring the size of a cell using a graticule and stage micrometer (5) The scale of things in biology & orders of magnitude - comparison of cells & other objects * ir spectrum benzene * mass spectrum benzene * 1H NMR spectrum of benzene * 13C NMR spectrum of benzene July 26th ir spectrum ethanol * mass spectrum of ethanol * 1H NMR spectrum of ethanol * 13C NMR spectrum of ethanol * forces-3 * H2-O2 fuel cell July 28th isomers of C6H13X * naming organic compounds July 29th isomerism index * constitutional/structural isomerism Examples of chain isomerism 14.1.2(1b) Examples of positional isomerism 14.1.2(1c) Examples of functional group isomerism 14.1.2(1d) Examples of tautomerism July 30th ir spectrum of ethanoic acid July 31st mass spectrum of ethanoic acid * 1H NMR spectrum of ethanoic acid * 13C NMR spectrum of ethanoic acid * steam locomotive 92240 * Aug 1st atomic structure * bonding in carbon dioxide * copper complex ion spectra * artist peter hicks Aug 3rd 1. The structure of Atoms – three fundamental particles 2. 'A 'portrait of an atom' and comparing relative size of particles 3. Atoms, sub-atomic particles, atomic number, mass number nuclide notation and diagrams 4. Isotopes - definition and examples explained, nuclide notation for isotopes 5. The electronic structure of atoms – rules and relation to the Periodic Table 6. Which electron arrangements are stable and which are not and why? 7. History of atomic structure models, alpha particle scattering experiment 8. Allotropes - definition - examples explained – don't confuse with isotopes! 9. The effect of ionizing radiation on atoms - formation of positive ions Aug 4th isomers of C9H20 Aug 6th electrolysis of acidified water * electrolysis of sodium chloride solution (brine) * ▲ EMAIL chem55555@hotmail.com ▲AI used to help with the photography notes pages BUT NOT the science pages [Author and photographer © Dr Phil Brown PhD plus notes help from AI these days, page updated July 14th 2026]
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