Introduction to the study of inorganic chemistry / by William Allen Miller.

  • Miller, William Allen, 1817-1870.
Date:
1871
Catalogue details

Licence: Public Domain Mark

Credit: Introduction to the study of inorganic chemistry / by William Allen Miller. Source: Wellcome Collection.

    43/332
    jar of oxygen. It will burn away rapidly, with a steady glow, throwing out sparks, or scintillations, and wilt produce a new colourless gas, called carbonic anhydride, or carbonic acid (CO.). Exp. 12.—Place a little sulphur in a small copper spoon on the end of a wire, called a deflagrating spoon ; heat it in the flame ■ of a spirit lamp till it takes fire, and suspend it in like manner in another jar of oxygen The sulphur will burn with a lilac flame, and on uniting with the gas will form an invisible substance with a pungent odour, called sulphurous anhydride (SO,). Exp. 13.—Cut off a piece of phosphorus of about the size of a pea from a stick of phosphorus under water.* Dry it care- fully on a bit of blotting-paper, and put it into a copper spoon, also suspended from a wire. Touch it with a hot wire ; it will take fire. Plunge it at once into oxygen ; it will burn with dazzling brilliancy, and form white fumes of phosphoric anhydride (P-Oj). Many substances which will .scarcely burn in air ilcflagraic, or burn witlt violence, in oxygen ;— Exp. 14.—Heat a piece of watch-spring red hot for a few moments in the fire ; let it cool, and then twist it into a spiral. Heat one end slightly, and dip it into a little powdered sulphur, and pass the other end through a cork. Set fire to the sulphur, and immediately plunge it into a jar of oxygen, supporting it in the neck of the jar by the cork. The burning sulphur will set fire to the steel, which will burn with great splendour, while drops of melted oxide of iron (FojO^) will run down and fall upon the plate IdcIow. Exp. 15.—Zinc foil cut into the form of a tassel, if it Ire tipped with sulphur to enable it to take fire, may Ire kindled and will burn in oxygen with a dazzling white light, forming zinc oxide (ZnO). Exp, 16.—Place a piece of potassium f of the size of a pea in * Phosphorus is e.'ctrcmcly inflammable ; it must always Ix; ke]rl under water, and should not he liandled with the warm liand except under w.ater. t Potassium is the metal contained in ]icarl-as!); it must .always be kept under naphtha, and must not be touched with the fingers, or with anything that is wet.