A Short History of ChemistryHeath, 1894 - 163 páginas |
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Términos y frases comunes
affinity alchemists alchemy alkalies ammonia analysis analytical ancient animal apparatus atomic theory atomic weights became Bergman Berthollet Berzelius bodies burning calcination called carbon century chem chemists chlorine combination combustion composition compound radicals constituents contain copper Dalton Davy decomposition Demokritos determined discovered discovery dualistic Dumas early earth Egyptians electricity elements especially experiments facts gases gave Gay Lussac Geber glass-making gold Greek heat hydrochloric acid hydrogen idea important improved inorganic iron knowledge known laboratory Lavoisier Lavoisier's law of volumes learning Liebig Lussac medicine ment mercury metals methods minerals molecules muriatic acid nature nitric acid nitrogen number of atoms observed organic chemistry organic substances oxide oxygen Paracelsus particles philosophers PHLOGISTIC phlogiston theory physical physician potash prepared Priestley principle properties proportions proved regarded salts Scheele scientific showed silver Stahl stances substitution sulphur tion transmutation valence various vessel views Wöhler writings Zosimus
Pasajes populares
Página 4 - Many of them also which used curious arts, brought their books together, and burned them before all men : and they counted the price of them, and found it fifty thousand pieces of silver.
Página 66 - I presently found that, by means of this lens, air was expelled from it very readily. Having got about three or four times as much as the bulk of my materials, I admitted water to it, and found that it was not imbibed by it. But what surprised me more than I can well express was that a candle burned in this air with a remarkably vigorous flame...
Página 8 - Ascend with the greatest sagacity from the earth to heaven, and then again descend to the earth, and unite together the powers of things superior and things inferior. Thus you will obtain the glory of the whole world, and obscurity will fly far away from you.
Página 163 - Special care has been taken in selecting for treatment such compounds as will best serve to make clear the fundamental principles. General relations as illustrated by special cases are discussed rather more fully than is customary in books of the same size ; and, on the other hand, the number of compounds taken up is smaller than usual, though all which are of real importance to the beginner are treated of with some degree of fulness.
Página 66 - I proceeded with great alacrity to examine by the help of it what kind of air a great variety of substances, natural and factitious, would yield, putting them into glass vessels, which I filled with quicksilver, and kept them inverted in a basin of the same.
Página 81 - I now mean by elements, as those chymists that speak plainest do by their principles, certain primitive and simple, or perfectly unmingled bodies; which not being made of any other bodies, or of one another, are the ingredients of which all those called perfectly mixt bodies are immediately compounded, and into which they are ultimately resolved...
Página 67 - ... that the injury which is continually done to the atmosphere by the respiration of such a number of animals, and the putrefaction of such masses of both vegetable and animal matter, is in part at least repaired by the vegetable creation.
Página 87 - I am nearly persuaded that the circumstance depends upon the weight and number of the ultimate particles of the several gases : those whose particles are lightest and single being least absorbable, and the others more according as they increase in weight and complexity...