The Principles of Chemistry, Volumen2Longmans, Green, and Company, 1891 |
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Página 37
... colour of red litmus paper . Zinc oxide is obtained in the wet way by adding an alkali hydrox- ide to a solution of a zinc salt - for instance : ZnSO4 + 2HKO = K2SO , + ZnH2O . The gelatinous precipitate of zinc hydroxide is soluble in ...
... colour of red litmus paper . Zinc oxide is obtained in the wet way by adding an alkali hydrox- ide to a solution of a zinc salt - for instance : ZnSO4 + 2HKO = K2SO , + ZnH2O . The gelatinous precipitate of zinc hydroxide is soluble in ...
Página 40
... colour ; its lustre , compared with many other metals , is insignificant . When cast it exhibits a tabular structure . Its specified gravity is about 7 - that is , varies from 6.8 to 72 , according to the degree of compression ( for ...
... colour ; its lustre , compared with many other metals , is insignificant . When cast it exhibits a tabular structure . Its specified gravity is about 7 - that is , varies from 6.8 to 72 , according to the degree of compression ( for ...
Página 50
... colour . The copper plate , on being heated yields vapours of mercury , and then again assumes its original red colour ( if it does not oxidise ) . The mercurous compounds , HgX , under the action of oxidising agents , even air , pass ...
... colour . The copper plate , on being heated yields vapours of mercury , and then again assumes its original red colour ( if it does not oxidise ) . The mercurous compounds , HgX , under the action of oxidising agents , even air , pass ...
Página 55
... colour , with a specific volume , about 14 ( cadmium = 13 , mercury = 15 ) , and , therefore , its specific gravity ( 155 ÷ 14 ) will nearly 11. Such a metal is unknown . But in 1879 Dahl , in Norway , discovered in the island of Oterö ...
... colour , with a specific volume , about 14 ( cadmium = 13 , mercury = 15 ) , and , therefore , its specific gravity ( 155 ÷ 14 ) will nearly 11. Such a metal is unknown . But in 1879 Dahl , in Norway , discovered in the island of Oterö ...
Página 63
... colour , and when dry does not alter in the air at the ordinary temperature ; but it burns when ignited , and in so ... coloured dark brown ; they contain about 4 p.c. of carbon and up to 7 p.c. of aluminium , so that they cannot be ...
... colour , and when dry does not alter in the air at the ordinary temperature ; but it burns when ignited , and in so ... coloured dark brown ; they contain about 4 p.c. of carbon and up to 7 p.c. of aluminium , so that they cannot be ...
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Términos y frases comunes
acetic action alkali alloy alumina aluminium ammonia ammonium analogous anhydride anhydrous antimony aqueous arsenic atomic weight barium basic salts boiling boric boron cadmium calcium carbon bisulphide carbonic acid carbonic anhydride cast iron charcoal chemical chloranhydride chloride chromic acid chromium cobalt colour colourless combination composition compounds containing copper corresponding crystalline crystals cupric cupric oxide cyanide decomposed decomposition dilute dioxide dissolves double salts easily elements evaporated evolved example excess feeble ferrous fluoride formation fused gives heated hydrate hydrochloric acid hydroxide hypophosphorous acid ignited insoluble instance isomorphous lead lead dioxide liquid magnesium manganese manganous mass mercury metals mixture molecules nitrate nitric acid nitrogen obtained ordinary temperature oxidised oxygen peroxide phosphoric acid phosphorus platinum potassium powder precipitate presence properties quantity reaction silica silicon silver sodium soluble in water solution specific gravity substance sulphate sulphide sulphuretted hydrogen sulphuric acid sulphurous anhydride volatile volume whilst yellow zinc
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Página 488 - Stage 1. With 165 Illustrations and a large number of Examples. Fcp. 8vo. Is. 6d. Stage 2. With 122 Illustrations. Fcp. 8vo.