Lessons in elementary chemistryMacmillan & Company, 1893 - 503 pages |
Expressions et termes fréquents
acetic acid acting action alcohol aldehyde alkalis ammonia ammonium antimony arsenic Atomic Weight atoms of hydrogen barium benzene bodies boiling bromine burns calcium carbon atoms carbon dioxide carbonic acid caustic potash CH₂ chemical Chemistry chlorate chloric acid chloride colour colourless liquid combined composition compounds constitution contains copper crystalline crystals decomposes decomposition density dissolves distillation elements ether ethyl ethylene flame formed formula gases glycerol glycol grams H₂O heated hence hydrochloric acid hydrogen hydroxide insoluble iodide iodine iron isomeric known magnesium melts mercury metal mixture Molecular Weight molecule monoxide nitrate nitric acid nitrogen obtained occurs oxalic oxide oxygen passing phosphate phosphorus platinum potassium potassium chlorate powder precipitate prepared pressure produced properties pure radicals reaction salt silicon silver soda sodium solid soluble in water solution specific gravity substance sulphate sulphide sulphur dioxide sulphuric acid Symbol temperature trioxide tube vapour volatile volume whilst yields zinc
Fréquemment cités
Page 11 - ... in the same way. Gaseous diffusion goes on through the minute pores of certain solids, such as stucco, or thin plates of graphite ; the different diffusive rates of air and hydrogen may be well seen by fixing a thin piece of stucco on to one end of a glass tube open at the other end, and filling this with hydrogen ; on plunging the open end into water a steady rise of this liquid in the tube is noticed, and after some time the whole of the hydrogen is found to have disappeared, and the tube contains...
Page 11 - Since two volumes of hydrogen unite with one volume of oxygen to form two volumes of water...
Page 18 - ... the mercury in the barometer tube is found to stand at the same level as that in the trough, showing that the elastic force of the vapour at that temperature is equal to the atmospheric pressure. Hence water boils when the tension of its vapour is equal to the superincumbent atmospheric pressure. On the tops of mountains, where the atmospheric pressure is less than at the...
Page 366 - COHEN.— THE OWENS COLLEGE COURSE OF PRACTICAL ORGANIC CHEMISTRY. By JULIUS B. COHEN, Ph.D., Assistant Lecturer on Chemistry in the Owens College, Manchester. With a Preface by Sir HENRY ROSCOE, FRS, and C.
Page 368 - Gl. 8vo. 6s A TEXT-BOOK OF ELEMENTARY METALLURGY FOR THE USE OF STUDENTS. To which is added an Appendix of Examination Questions, embracing the whole of the Questions set in the three stages of the subject by the Science and Art Department for the past twenty years. By the same. Gl.
Page 117 - ... silver nitrate, proving the absence of even a trace of the acid gas. After the mixture of salt and acid has been heated for some time in the iron pan, and has become solid, it is raked by means of the doors (aa) seen in Fig.
Page 175 - It is not only those bodies which have the power of imparting colour to a flame which yield characteristic spectra, for this property belongs to every elementary substance, whether metal or non-metal, solid, liquid, or gas ; and it is always observed when such element is heated to the point at which its vapour becomes luminous, for then each element emits the peculiar light given off by it alone, and the characteristic bright lines become apparent when its spectrum is observed. Most metals require...
Page 115 - England on an enormous scale, and used for glass making, soap making, bleaching, and various other purposes in the arts. Formerly it was prepared from barilla or the ashes of sea-plants, but now it is wholly obtained from sea-salt by a series of chemical decompositions and processes, which may be divided into two stages : —• "1. Manufacture of sodium sulphate, or salt-cake, from sodium chloride (common salt) ; called salt-cake process. " 2. Manufacture of sodium carbonate, or soda-ash, from salt-cake...
Page 117 - ... so perfectly is this condensation as a rule carried out, that the escaping gases do not cause a turbidity in a solution of silver nitrate, proving the absence of even a trace of the acid gas. After the mixture of salt and acid has been heated for some time in the iron pan, and has become solid, it is raked...
Page 372 - Plates. 8vo. 21s. •THORPE.— A SERIES OF CHEMICAL PROBLEMS. With Key. For use in Colleges and Schools. By TE 'THORPE, B.Sc. (Vic.), Ph.D., FRS Revised and Enlarged by W.