TJ.ST.S FOB TUB METALS.] 



CHKM1STKY. 



393 



which may be applied for each metal ; and which our 

 readers should employ, if they would obtain an extended 

 and practical knowledge of chemical science. Of all 

 branches of science, that of chemistry is essentially 

 experimental 



J'l'ifina. A full description of the leading properties 

 of tliis metal has been given at page 372. The following 

 are tests for its presence in solution : 

 Solution Tested. Test. Results. 



Bichloride ...... Silver plate ............ Black powder. 



Sal-ammoniac .......... Yellow crystalline 



precipitate. 



Hydro-sulphuric acid Black sulphide. 



Hyilro - sulphate of "I j, 



ammonia ............ J 



'.See p. 372. 

 Chloride ......... Proto-sulphateof iron Metallic gold. 



Proto-chlorideof tin.. Purple powder. 



Hydro-sulphuric acid Black sulphide. 



Hydro - sulphate of! ~ 



ammonia ............ J 



r. See p. 373. 

 Nitrate ............ Copperplate ........... Metallic silver. 



Common salt .......... A white curdy preci- 



pitate, which turns 

 black on exposure 

 to light. 



lodi.le of potassium.. Yellow powder. 



Hydro-sulphuric acid Black sulphide. 

 Hydro - sulphate ofl 



ammonia ............ J 



Cyanide of potassiirn White powder. 



Mercury. See p. 374. 

 Chloride, Corro- "1 

 lite sublimate, I 

 or other solu- f Iodlde of potassium.. fellow powder. 



blesalt ......... J 



Do. in excess 



Alkalies 

 Ilydro-sulphuricacid, 



hydro. sulphate 



ammonia 



Plate of copper or 

 jinc 



id, "I 

 of ^ 

 J 



Red do., eventually 



re-dissolved. 

 Black oxide. 



Black sulphide. 



,, . ... 



Metallic mcrc-ury. 



Copper. See p. 376. 

 Sulphate, &c. ... Potass .................. 



Ammonia ............... 



Hydro-sulphnrio acid 



LlhydLsulphate 

 of ammonia ......... 



Iron or zinc plate ..... 



Prussiate of potass. ... 



Iron, See p. 376. 



Proto - sulphate, 1 Ferro-cyanide of no- j 



&c ...... . } tassium . 1 



I 



Per-salts ......... Do ...................... 



Proto-salts ...... Fern-cyanide of po- 



tassium ....... . 



Per-salts ......... Do ...................... 



Blue powder. 



Do., which re-dis- 

 solves in <-\ 

 the test, affording a 

 deep-blue colour. 



Proto-salts ...... Alkalies 



Per-salts ......... Do 



Sulpho - cyanide 

 potassium 



Lead. See p. 378. 

 Soluble .salts ..... Hydro-folplraricMU. 



Metallic copper. 

 Red-brown powder. 



Li ? h '- blne r"-Hpi- 



Jte, which s r 



darkens. 



Dark-blue precipitate. 

 

 Deep-blueprecipitatc. 



No precipitate, but a 



na-eoknmd liquid. 



Green powder, turn- 



ing to red. 

 Red oxide. 



,,. . 

 Blood-red liquid. 



Vi r. I. 



ydro-folplraricMU. 1 



hydro-sulphate O f I 

 ammonia ............ J 



Chromate of potass... 



Alkalies ................. 



Hydrochloric acid 1 

 and chlorides ...... J 



Blackish-brown 

 phide. 



Yellow chromate. 

 White precipitate. 



White chloride. 



sul- 



Solution Tested. 

 Soluble salts ..... 



Results. 



Test. 

 Sulphuric acid and 1 ,, .. 



sul phates / M hlte sulphate. 



Iodide of potassium.. Yellow iodide. 



Acetate Metallic zinc Metallic lead. 



Zinc. See p. 379. 



Soluble salts Hydro-sulphuric acid, "I 



and hydro-sulphate > White sulphide, 

 of ammonia J 



Alkalies White oxide. 



Carbonates of alkalies Do. That in excess 



of ammonia is re- 

 dissolved. 

 Tin. Seep. 380. 



Soluble salts Hydro-sulphuric acid, "I v 



andhydro-sulphate L Td ?2 r brOWn Sul - 

 of ammonia... J P hlde - 



Alkalies White oxide. 



Chloride of gold Purple powder (See 



Gold.) 



Per-salts Metallic zinc Metallic tin. 



Nickel See p. 380. 



Soluble salts ... Hydro-sulphate ofl . 



ammonia } Black sulphide. 



Hydro-sulphuric acid No precipitate. 



Potass, &c Green oxide. 



Cyanide of potassium Do. cyanide. 



Bismuth. See p. 380. 

 Soluble salts ... Hydro-sulphnricacid,') 



and hydro. sulphate f Black sulphide. 



of ammonia J 



Alkalies White oxide. 



Chromate of potass... Yellow chromate, so- 

 luble in nitric acid, 

 by which it differs 

 from chromate of 

 lead. 



Antimony. See p. 380. 

 Soluble salts ... Hydro-sulphuric acid Red sulphide. 



Hydro - sulphate ofl Red sulphide soluble 



ammonia J in excess. 



Alkalies White oxide. 



Metallic zinc Metallic antimony as 



a black powder. 



(S<je remarks as to antimoniuretted hydrogen, at p. 381. ) 



Arsenic Aneniaiu Acid. The student is referred to 



our extended remarks on the detection of arsenic, at 



p. 381, et eq. ; in which full information on the various 



testa usually employed is given. 



Manganese. See p. 384. 



Solution Tested. Test. Results. 



Soluble salts ... Hydro - sulphate of f Flesh-coloured I preci- 



ammonia j P' ta . te of the 8ul - 



I phide. 



Alkalies White oxide, turning 



to nearly black by 

 exposure to the at- 

 mosphere. 



i',.',,,Jt Seep. 384. 



Soluble salts ... Hydro - sulphate of ) , , , ... 

 ammonia {Blacksulph.de. 



Ilylro-sulphuricacid, * 



with neutral solu- V Do. 

 tions J 



Potass Blue precipitate, turn- 



ing green in the 

 air. 



Ammonia Blue precipitate, re- 

 soluble in excess, 

 producing a red 

 liquid. 



Carbonates of alkalies The pink carbonate of 



the mrtal. 



With borax a blue glass is produced by the heat of 

 the blow-pipe, which is highly characteristic of cobalt. 

 Chromium. See p. 384. 

 Solution Tested. Test. Results. 



Soluble salts ... Potass Green oxide, soluble 



in excess. 



Acetate of lead Chromate of lead. 



Chromic acid and l Nitrateof8il /Purple chromate of 



J ^ silver. 



8l 



salts 



