Dictionary of Chemistry [6th Ed.]

H 2 O(g) + C(s) →CO(g) + H 2 (g) The reaction is strongly endothermic but the reaction can be used in con- junction with that fo ...

tities as electrons is described by the Schrödinger equation. Schrödinger put forward this formulation of quantum mechanics in 1 ...

niqueundistorted photographs can be obtained. Weston cell (cadmium cell)A type of primary *voltaic cell devised by Edward Weston ...

cessfully be used for mixed ethers only when one alcohol is primary and the other tertiary (otherwise a mixture of the three pos ...

varying the composition. It is named after William Wood (1671–1730). Woodward, Robert Burns (1917–79) US organic chemist who wor ...

X xanthatesSalts or esters contain- ing the group –SCS(OR), where R is an organic group. Cellulose xanthate is an intermediate i ...

X-ray crystallographyThe use of *X-ray diffraction to determine the structure of crystals or molecules. The technique involves d ...

Y yeastsA group of unicellular fungi of the class Hemiascomycetae and phylum Ascomycota. They occur as single cells or as groups ...

Z Zeeman effect The splitting of the lines in a spectrum when the source of the spectrum is exposed to a mag- neticÜeld. It was ...

process for the manufacture of high- density polyethene using catalysts of titanium(IV) chloride (TiCl 4 ) and alu- minium alkyl ...

and a mild antiseptic in zinc oint- ments. An archaic name is philoso- pher’s wool. zinc sulphateA white crystalline water-solub ...

For example, aminoethanoic acid (the amino acid glycine) has the for- mula H 2 N.CH 2 .COOH. However, under neutral conditions, ...

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Appendices ...

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Appendix 1. The Greek alphabet Letters Name Letters NameAA A  alpha  nu  beta  xi gamma omicron  delta  pi  epsilon ...