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A compound of sulphur and some other element that is more electropositive
Answer for the clue "A compound of sulphur and some other element that is more electropositive ", 8 letters:
sulphide
Word definitions for sulphide in dictionaries
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Sulphide \Sul"phide\, n. (Chem.) A binary compound of sulphur, or one so regarded; -- formerly called sulphuret . Double sulphide (Chem.), a compound of two sulphides. Hydrogen sulphide . (Chem.) See under Hydrogen . Metallic sulphide , a binary compound ...
WordNet
Word definitions in WordNet
n. a compound of sulphur and some other element that is more electropositive [syn: sulfide ]
Wikipedia
Word definitions in Wikipedia
Sulphide (the British English spelling of " sulfide ") is a chemical term associated with the following chemical classes: Sulfide Bisulfide Disulfide It can also be associated with the name of a geographic location:
Wiktionary
Word definitions in Wiktionary
n. 1 (label en British spelling chemistry) (alternative spelling of sulfide English) 2 A kind of clear marble with a small statuette or figure inside.
Longman Dictionary of Contemporary English
Word definitions in Longman Dictionary of Contemporary English
noun COLLOCATIONS FROM CORPUS ■ NOUN hydrogen ▪ Sulphur bacteria may be present below the anoxic zone, reducing sulphate ions and liberating hydrogen sulphide . ▪ So the sewage goes septic, giving off hydrogen sulphide which corrodes the pipes and makes ...
Usage examples of sulphide.
A special test for sulphide may be made by adding a drop or two of solution of acetate of lead to four or five c.
The two filtrates are mixed and treated with a little acetic acid, and the cobalt and nickel are then precipitated as sulphides by a current of sulphuretted hydrogen.
Zinc is detected by dissolving the substance in hydrochloric or nitric acid, boiling, and adding sodic hydrate in excess, filtering, and adding ammonic sulphide to the filtrate.
It oxidises most combustible substances with deflagration, and thereby converts sulphides into sulphates, arsenides into arsenates, and most metals into oxides.
The Rossland, the Boundary and the Kootenay districts are the chief centres of vein-mining, yielding auriferous and cupriferous sulphide ores, as well as large quantities of silver-bearing lead ores.
Sulphide of antimony is also a constituent of fahlerz and of many silver ores.
But in defining a reducing agent as one which removes oxygen, or sulphur, from a metallic compound so as to set the metal free, it must be remembered that sulphur itself will reduce metallic lead from fused litharge, and that oxygen will similarly set free the metal in fused lead sulphide.
For example, this occurs in the case of a mixture of pyrites with oxide of iron, or in a mixture of sulphides and sulphates.
Free or native sulphur may be volatilised, condensed, and weighed, but pyrites only gives up a portion of its sulphur when heated in a closed vessel, while most sulphides, and all sulphates, give up none at all.
The copper is separated from the solution as sulphide by means of a rapid current of sulphuretted hydrogen.
Mercury, which if present would interfere, is separated because of the insolubility of its sulphide in nitric acid.
If nickel is present, the few milligrams of copper remaining in the electrolysed solution should be separated with sulphuretted hydrogen, the precipitated sulphide dissolved in nitric acid, and determined colorimetrically.
The antimony is separated as sulphide, redissolved in hydrochloric acid, and oxidised with a crystal of chlorate of potash.
If the separated sulphide be heated in a borax bead, the colour obtained will be a sherry brown in the outer flame, and grey or colourless in the inner flame if nickel only is present.
It is filtered, washed, and transferred back to the beaker, and then digested with warm ammonic sulphide.