Experimental chemistry, founded on the work [Principles of chemistry] of J.A. Stöckhardt |
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Page 4
... become very hot , and must be allowed to stand until cold . Very likely a white sediment will form , but this , which is owing to the presence of lead in the acid , will soon subside , and will do no harm . Take a strip of sheet copper ...
... become very hot , and must be allowed to stand until cold . Very likely a white sediment will form , but this , which is owing to the presence of lead in the acid , will soon subside , and will do no harm . Take a strip of sheet copper ...
Page 5
... become red - hot . With a more powerful battery a much greater length of wire may be heated to whiteness , and even ... becomes black , dull and brittle ; on exposure to moisture it is converted into a powder of a yellowish - brown ...
... become red - hot . With a more powerful battery a much greater length of wire may be heated to whiteness , and even ... becomes black , dull and brittle ; on exposure to moisture it is converted into a powder of a yellowish - brown ...
Page 6
... become gradually soft , their dark colour passes into lighter , they crumble to smaller and smaller pieces , and are finally changed to earth . A potato placed in the earth grows soft , loses its mealy taste , becomes sweet and finally ...
... become gradually soft , their dark colour passes into lighter , they crumble to smaller and smaller pieces , and are finally changed to earth . A potato placed in the earth grows soft , loses its mealy taste , becomes sweet and finally ...
Page 7
... become fixed , yet by other chemical processes it can be reconverted into its gaseous form . If this crust of iron is now exposed for a time to moist air , it will gradually become rust , and again weigh more than before ; it has ...
... become fixed , yet by other chemical processes it can be reconverted into its gaseous form . If this crust of iron is now exposed for a time to moist air , it will gradually become rust , and again weigh more than before ; it has ...
Page 8
... become so hot that the hand cannot bear to touch it , and it will readily ignite phosphorus or the tip of a lucifer - match . Similar illustrations will occur to all . When the axle of a railway carriage gets dry , so much heat is ...
... become so hot that the hand cannot bear to touch it , and it will readily ignite phosphorus or the tip of a lucifer - match . Similar illustrations will occur to all . When the axle of a railway carriage gets dry , so much heat is ...
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Common terms and phrases
ammonia atom of hydrogen atomic weight become bleaching blue bodies boiling bottle bromine burn calcium called carbonic anhydride chemical action chemical force chemistry chlorate chloric acid chlorine Cl₂ cold water colour combine combustion common salt composition compounds condensed contains converted cooling copper cork crystals decomposed denote diad displaced dissolved earth electricity elements equal evaporation Experiment flame flask fluid formula fumes gases glass tube grains H₂ H₂O H₂SO half an ounce heat heavier hydrate hydrochloric acid hydrogen inches iodine iron lighter lime liquid measures melted mercuric chloride mercury metal molecule monad nitrate nitric acid nitrogen obtained odour oxide oxygen ozone phosphorus piece platinum potassium chlorate potassium iodide powder pressure produced quantity radical saltpetre sodium solid soluble solution specific gravity steam substances sulphate sulphide sulphuric acid sulphurous anhydride surface symbol takes place temperature test-tube tumbler unite vapour vessel vols volumes of hydrogen warm wire zinc
Popular passages
Page 19 - ... the accuracy of every chemical process, and ascertain the true composition of bodies by proving the weight of the compound to be equal to the weight of the substances which produce it. 32. Use of the Balance,-— The balance is to the chemist what the compass is to the mariner, and before its introduction as a means of verifying experiments, the whole science of Chemistry was a collection of disconnected and separate facts and theories. Until within a comparatively recent period it was supposed...