A History of ChemistryMcGraw-Hill, 1918 - 292 oldal |
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acetic acid affinity alchemists alcohol alkali ammonia ammonium argon atmosphere atomic weights Avogadro's base Berthelot Berthollet Berzelius Boyle Bunsen carbon Chaux chemical chemical affinity chemists chlorine combination combustion conclusion contain crystal Dalton Davy decomposed decomposition determined discovery dualistic Dumas electricity electrolysis elements ether ethyl experimental experiments fact Faraday formula fundamental gases Gay-Lussac Gerhardt heat helium Hofmann hydrogen hypothesis idea important inorganic interest investigation Kekulé laboratory latter Lavoisier Lavoisier's Liebig magnesia mercury metal modern molecules muriatic nature neutral nitric nitrogen number of atoms observed obtained organic chemistry organic compounds original Ostwald oxide oxygen particles phlogiston phlogiston theory phosphorus position potassium prepared Priestley properties proportions published quantity radical radioactive radium rays reactions relationships salts Scheele showed solution substances sulphate sulphuric acid Thorium tion type theory valence vapor densities volume Wöhler X-rays zinc
Népszerű szakaszok
66. oldal - All these things considered [that is, the chemical facts he had just recited], it seems probable to me that God in the beginning formed matter in solid, massy, hard, impenetrable, movable particles, of such sizes and figures, and with such other properties and in such proportion to space as most conduced to the end for which He formed them; and that these primitive particles, being solids, are incomparably harder than any porous bodies compounded of them, even so very hard as never to wear or break...
90. oldal - A small piece of pure potash, which had been exposed for a few seconds to the atmosphere, so as to give conducting power to the surface, was placed upon an insulated disc of platina, connected with the negative side of the battery of the power of 250 of 6 and 4, in a state of intense activity ; and a platina wire, communicating with the positive side, was brought in contact with the upper surface of the alkali.
66. oldal - All these things being considered, it seems probable to me that God in the beginning formed matter in solid, massy, hard, impenetrable, moveable particles, of such sizes and figures, and with such other properties and in such proportion to space as most conduced to the end for which he formed them...
91. oldal - ... small globules having a high metallic lustre, and being precisely similar in visible characters to quicksilver, appeared, some of which burnt with explosion and bright flame, as soon as they were formed, and others remained, and were merely tarnished, and finally covered by a white film which formed on their surfaces.
91. oldal - Under these circumstances a vivid action was soon observed to take place. The potash began to fuse at both its points of electrization. There was a violent effervescence at...
68. oldal - Having been long accustomed to make meteorological observations, and to speculate upon the nature and constitution of the atmosphere, it often struck me with wonder how a compound atmosphere, or a mixture of two or more elastic fluids, should constitute apparently a homogeneous mass, or one in all mechanical relations agreeing with a simple atmosphere.
97. oldal - ... advised me not to give up the prospects I had before me, telling me that Science was a harsh mistress ; and, in a pecuniary point of view, but poorly rewarding those who devoted themselves to her service.
40. oldal - With this apparatus, after a variety of other experiments, an account of which will be found in its proper place, on the 1st of August, 1774, I endeavoured to extract air from mercurius calcinatus per se; and I presently found that, by means of this lens, air was expelled from it
98. oldal - ... that matter. Finally, through his good efforts I went to the Royal Institution early in March of 1813, as assistant in the Laboratory; and in October of the same year, went with him abroad as his assistant in experiments and in writing. I returned with him in April 1815, resumed my station in the Royal Institution, and have, as you know, ever since remained there.
43. oldal - The feeling of it to my lungs was not sensibly different from that of common air, but I fancied that my breast felt peculiarly light and easy for some time afterwards. Who can tell but that, in time, this pure air may become a fashionable article in luxury ? Hitherto, only two mice and myself have had the privilege of breathing it.