Handbook of Chemistry, for School and Home UseWoolworth, Ainsworth, & Company, 1869 - 205 Seiten |
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Ergebnisse 6-10 von 21
Seite 56
... surface of the metal remains bright in dry air , but it soon becomes tarnished in moist air , owing to the formation of a film of oxide ; and this oxidation proceeds rapidly in presence of a small quantity of weak acid , such as ...
... surface of the metal remains bright in dry air , but it soon becomes tarnished in moist air , owing to the formation of a film of oxide ; and this oxidation proceeds rapidly in presence of a small quantity of weak acid , such as ...
Seite 58
... surface of the metal ; it is very malleable , ductile , and tenacious ; it melts at a red heat , and is slightly volatile at a white heat , giving a green tint to a flame of hydrogen gas which is passed over it ; and it is one of the ...
... surface of the metal ; it is very malleable , ductile , and tenacious ; it melts at a red heat , and is slightly volatile at a white heat , giving a green tint to a flame of hydrogen gas which is passed over it ; and it is one of the ...
Seite 61
... surface of the zinc free from oxide , and allows the two metals to unite . zinc is said to be galvanized . alloy of zinc , copper , and nickel . Iron thus coated with German silver is an 82. IRON SALTS . — The oxides of iron are four in ...
... surface of the zinc free from oxide , and allows the two metals to unite . zinc is said to be galvanized . alloy of zinc , copper , and nickel . Iron thus coated with German silver is an 82. IRON SALTS . — The oxides of iron are four in ...
Seite 65
... surface is cleared of impurities by passing a linen cloth lightly over it ; the plate of glass is carefully dried , and its edge being made to dip below the surface of the mercury , is pushed forward cautiously ; all bubbles of air are ...
... surface is cleared of impurities by passing a linen cloth lightly over it ; the plate of glass is carefully dried , and its edge being made to dip below the surface of the mercury , is pushed forward cautiously ; all bubbles of air are ...
Seite 66
... surface . The lead oxidizes , and the oxide ( litharge ) fuses , and partly runs away and partly sinks into the porous bed of the furnace , while the silver remains behind in the metallic state . For the extraction of silver from the ...
... surface . The lead oxidizes , and the oxide ( litharge ) fuses , and partly runs away and partly sinks into the porous bed of the furnace , while the silver remains behind in the metallic state . For the extraction of silver from the ...
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acetic acetic acid affinity alcohol alkali allotropic alloy aluminic ammonia anhydride animal antimony atmosphere atomic weight atoms of hydrogen becomes bismuth bivalent burning calcic calcium called candle carbonic acid charcoal chemical chloric acid chloride coal coal-gas color combination combustion compounds contains converted copper crystals cylinder decomposition diastase dissolves distillation earth elements exposed fermentation filled flame flask furnace gases H₂O heat hydrate hydric sulphide hydrogen insoluble iron lead light lime liquid magnesium manganese manufacture matter melted mercury metal mixed mixture molecules molecules of H2O muriatic acid nitrate nitric acid nitrogen obtained oxide oxygen passes phosphorus plant platinum plumbic potassic potassium prepared properties pure quantivalence reverberatory furnace salt silicates silver small quantity soda soda-ash sodic sodium solid soluble in water solution starch substances sugar sulphate sulphuric acid symbol takes fire trivalent univalent vapor vegetable volatile wood zinc