358 



On Chemical Tests. 



[Oct. 



Substance. 



13 Lead, oxide. 



14 Lime 



Do. carbonate 



15 Magnesia. 



16 Molybdenum 



17 Nickel, oxide.. 



18 Tellurium, oxide 



19 Tin, oxide 



20 Titanium, oxide. 



21 Tungsten , 



22 Uranium, oxide. 



23 Yttria. 



24 Zinc, oxide. ,. 



On Platina 



On Charcoal. 



25 Zirconia 



Minium becomes Orange glass reduces 



black when hot ; 

 at incipient red- 

 ness changes to 

 yellow oxide, fu- 

 sible into orange 

 coloured glass 

 No change. 



Becomes caustic 

 & alkaline, emits 

 bright light. 



No change. 



Fumes and fuses ; 

 brown yellow on 

 cooling ; in R: f: 

 blue ; intense 

 heat, brown. 



No chans 



Fuses and fumes. 



Takes fire and 

 burns like t-indei 

 into peroxide. 



No change. 



R: f: blackens 

 not reduced 



into a bead of lead 



No change 



Yellow, hot : white, 

 cold: does not 

 fuse, give out 

 great ligjht at a 

 high heat & white 

 fumes which con- 

 dense like wool 

 n fusible : emits in- 

 tense lkrht 



Gold - Platina.. 



Iridium Rhodium. 



Palladium . . . , 



No change 



Fuses and isabsorbec 

 and partly reduced 



No change 



Fuses: effervesces 

 reduces 



R: f: peroxide does 

 not fuse, but redu 

 ces in a strong pro 

 longed heat 



No change 



R: f : blackens : but 

 not reducen 



Peroxide, becomes 

 oxide, blackens but 

 does not fuse 



No change 



Infusible, emits in- 

 tense light 



With Soda. 



On P : w : clear glass 

 becomes yellowish 

 & opaque on cool- 

 ing. On ch. in- 

 stantly reduced 



No action. 



On P: w: efferves- 

 ces; clear glass: 

 becomes milky on 

 cooling. On ch. fuses 

 and reduced. 



On ch. absorbed and 

 reduced, not fused, 



On P : w : colourless 

 glass, white on] 

 cooling. On ch ; re- 

 duced. 



On P: w : efferves- 

 ces : tumefied in- 

 fusible mass. On ch. 

 readily reduced 



Fuses into a clear 

 dark yellow glass; 

 white or grey white 

 on cooling, and 

 crystallizes with 

 evolution of great 

 heat. On ch : not 

 reducible 



On p : w : dark yel- 

 low glass; crystal- 

 lizes on cooling ; 

 opaque white or 

 yellowish On ch. 

 r. f. reduced 



Onch : brown yellow: 

 not fused 



No action 



On ch : not fused: re- 

 duced with flame; 

 white fumes whicil 

 cover the charcoal 



N"o action 



These metals have no action on the fluxes 



