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 acidified sodium dichromate.  The position of the C=O  bond determines whether the compound is an aldehyde or ketone OCREDEXCEL Reactions of carbonyl compounds Enter your text here...

EdexcelOCRAQA Production of alcohols Enter your text here ... Oxidation of alcohols Enter your text here ... Elimination from alcohols With phosphorus pentachlorideMaking HBrIodo alkanes Enter your text here ... Enter your text here ... Enter your text here ... Enter your text here ... Enter your text here ... Enter your text here ... Enter your te...

Accounting for electrons. The images in this slideshow here show how we can account for the way in which electrons are shared between atoms.  Use the first of the three buttons to the top left of the animation to see the outer electron configuration of each atom. Construct a table to show the name of the molecule, formula, no.of bond...

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. If Mr was the only factor that affects the state of a substance then wouldn't you expect water to be a gas ? 2. Why does Ice float on water? Most liquids become more dense as they cool. This caus...

Butane is used as a fuel. It is the fourth member of the alkanes.

 4.19 Some saturated hydrocarbons The Alkane series is a family of hydrocarbons.  The technical name for this sort of  "family" is a "homologous series" The alkane molecules contain atoms of hydrogen and carbon only. The general formula for the alkanes is CnH2n+2  4.19- 4.21 Activity 1. From one to ...

Plasma balls use a high voltage to ionise the gas inside

The trends in first ionisation energies give some important clues about the electron configuration of the elements.   What's the trend? First ionisation energies for the first 18 elementsInfogram Periodic patterns  General trends: Across a period As the nuclear charge increases so the attraction between the outermost electrons and th...

OCR Learning outcomes Additional guidance Reflux and distillation simulations  Simulate the oxidation of alcohols.. https://www.focuselearning.co.uk/s/2je6zycibjzu RefluxDistillation Enter your text here ...  Aliphatic synthetic routes Enter your text here ... Aromatic synthetic routes  Enter your text here ... Enter your t...

CP 2CP3CP6CP9CP11CP13a CORE PRACTICAL 2: Prepare a standard solution from a solid acid and use it to find the concentration of a solution of sodium hydroxide Enter your text here ... This video shows the preparation of a standard solution of sodium carbonate.  What mass of solid acid would be needed to prepare the same quantity of dilute ...

Turmeric contains the aromatic compound Curcumin

Intro image OCROCR 2EdexcelAQA Enter your text here ... Enter your text here ...  I had a dream!   This presentation outlines the way in which Kekule came to propose his model  for the structure of benzene. It also outlines the ways in which the kekule proposal does not adequately explain all the properties of the benzene molecu...

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