By Simon Anthony Cotton
ISBN-10: 1439807736
ISBN-13: 9781439807736
From cooking to medication, from engineering to artwork, chemistry—the technological know-how of molecules—is everywhere.
A social gathering of the molecules of chemistry, each Molecule Tells a narrative celebrates the molecules answerable for the studies of daily life: the air we breathe; the water we drink; the chemical compounds that gas our dwelling; the steroids that provide us intercourse; the colors of the seasons; the medicine that heal us; and the scented molecules that increase our vitamin and our encounters with one another. You can’t see them, yet you recognize that they're there.
Unveiling the buildings of toxic "natural" components and useful man-made molecules, this e-book brushes away any preconceived notions approximately chemistry to illustrate why and the way molecules subject.
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Additional resources for Every Molecule Tells a Story
Sample text
In the purification of aluminium oxide in the electrolytic extraction of aluminium, NaOH dissolves amphoteric Al2O3 but insoluble impurities are left behind and separated off; the aluminium-containing solution is then acidified to reprecipitate pure Al2O3. 1), sodium hydroxide hydrolyses fats, which are triglyceride esters of long-chain carboxylic acids, forming the sodium salts of the acids (soaps). The soapy feeling on your skin when you get even a trace of dilute NaOH solution on your finger is due to sodium octadecanaote (sodium stearate = soap) formed by hydrolysis of lipids in your skin.
As a demonstration, the methane can be burned in “flaming snowballs”. More seriously, because the global warming potential of methane is about 20 times that of CO2 (over a 100-year time span), there is concern about the effect that release of methane could have on climate change, especially in permafrost regions like Siberia. Levels of CH4 in the atmosphere have risen from 700 ppb in 1750 to ~1800 ppb at present. Apart from its use as a fuel, methane is an important chemical resource. Its reaction with steam in the presence of a hot nickel catalyst affords the mixture of CO and H2 known as “synthesis gas”—a widely used “feedstock” to make chemicals such as hydrogen, methanol, and ethanoic acid, for example.
5) C H H The double bond in alkenes is stronger than the ordinary C–C single bonds in alkanes, but because it is so electron rich and thus attracts electrophiles, this makes alkenes much more reactive than alkanes. This extra reactivity makes alkenes rare in nature; ethene is an exception. At room temperature, ethene is a colourless gas with a faintly sweet smell and taste that has anaesthetic properties. Geologists have suggested that it was formed in cracking reactions in the bitumen-containing rocks under the ancient Greek shrine at Delphi and that the famous Oracle of Delphi may have been in an ethene-induced trance when she made her predictions.
Every Molecule Tells a Story by Simon Anthony Cotton
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