A Compendious Manual of Qualitative Chemical AnalysisD. Van Nostrand, 1869 - 203 Seiten |
Andere Ausgaben - Alle anzeigen
Häufige Begriffe und Wortgruppen
acetic acid acid solution alkaline ammonia ammonia-water ammonium ammonium-salts antimony aqua-regia aqueous solution arsenic arsenic acid barium beaker boiling borax bottle bromides bulk calcium caoutchouc carbonate of ammonium carbonate of sodium carbonic acid charcoal chlorates chloride of ammonium chromate cipitate classes of salts compounds copper cork crucible cyanide diameter dissolved drop dryness evaporated filter filtrate flask fluoride funnel fused glass tubes globule heat hydrate hyposulphite ignited insoluble in water iodide iron lamp liquid magnesium members of Class mercury metallic elements mixed mixture mortar neutral nitrate nitrate of silver nitric acid original solution oxalates oxide paper phosphate platinum platinum crucible platinum foil porcelain porcelain dish potassium powder presence produced quantity reaction reagent residue separate silicic acid sodium solid solu soluble solvent stoppers strong acid strontium sublimate substance sulphate sulphide sulphuretted hydrogen sulphuric acid sulphydrate of sodium tartaric acid tartrate test-tube tion undissolved wire
Beliebte Passagen
Seite 174 - Its length and fineness also increase with the rapidity of motion of the hands. If it is desirable that the finer tube should have thicker walls in proportion to its bore than the original tube, it is only necessary to keep the heated portion soft for two or three minutes before drawing out the tube, pressing the parts slightly together the while. By this process the glass will be thickened at the hot ring. To obtain a tube closed at one end, it is best to take a piece of tubing, open at both ends,...
Seite 173 - When a tube or rod is to be bent or drawn close to its extremity, a temporary handle may be attached to it by softening the end of the tube, or rod, and pressing against the soft glass a fragment of glass tube, which will adhere strongly to the softened end. The handle may subsequently be removed by a slight blow, or by the aid of a file. If a considerable bend is to be made, so that the angle between the arms will be very small or nothing, as in a siphon, for example, the curvature can not be well...
Seite 171 - ... Whenever the place of experiment is supplied with common illuminating gas, a very small jet of burning gas may be advantageously substituted for the hot coal or slow match. To obtain such a sharp jet, a piece of hard glass tube, No. 5, 10 cm long, and drawn to a very fine point (see...