Transition metals form coloured compounds
OCREdexcelAQA Transition elements : properties Ligands and complex ions Ligand substitution and precipitation Redox reactions Electron con...
The NMR facility at Princeton University
Proton NMR produces a spectrum with a number of peaks. The number of peaks corresponds to the number of different chem...
Universal indicator is useful for giving an estimated value for the pH of a substance
Background This topic is mostly about equilibria so it is important for students to understand that concept first. Before tackling this topic ma...
Chromatography gets its name from the (sometimes) colourful chromatograms it produces.
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Intermolecular forces are responsible for holding together the two strands of a DNA molecule
Before tackling this topic make sure you are able to: explain the difference between intermolecular and intramolecular forces. use...
Quinoa is a complete protein, meaning that it contains all nine essential amino acids that our bodies cannot make on their own.
EdexcelOCRAQA Enter your text here ... Enter your text here ... Enter your text here ... Amino acid Molecule A. This is glycine - the simpl...
Diabetics need to test blood glucose levels regularly.
Carbonyl compounds all contain a C=O double bond. This is usually formed when an alcohol is oxidised using an oxidizing agent such as ...
EdexcelOCRAQA Production of alcohols Enter your text here ... Oxidation of alcohols Enter your text here ... Elimination from alcohols With phosphorus...
Accounting for electrons. The images in this slideshow here show how we can account for the way in which electrons are shared between atoms. ...
water expands when it freezes and ice therefore floats
1. Why is water a liquid and not a gas ( between 0 and 100oC) ? Water has a Relative Molecular mass ( Mr) of 18 ... Oxygen's Mr is 32. ...