The New chemistryD. Appleton and Company, 1875 - 326 páginas |
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Página 77
... flame will go out . We now , with a blow - pipe , melt the glass around the opening of the capillary tube , and thus hermetically seal up the vapor in the globe . At the same time we note the height of the barometer and the temperature ...
... flame will go out . We now , with a blow - pipe , melt the glass around the opening of the capillary tube , and thus hermetically seal up the vapor in the globe . At the same time we note the height of the barometer and the temperature ...
Página 87
... flame , and out of the sugar is evolved a mass of loose charcoal . Evidently , this charcoal must have come from the sugar . The crucible is unchanged , and , be- sides the air , the sugar and platinum were the only substances present ...
... flame , and out of the sugar is evolved a mass of loose charcoal . Evidently , this charcoal must have come from the sugar . The crucible is unchanged , and , be- sides the air , the sugar and platinum were the only substances present ...
Página 90
... flame . Here we have a very large bell full of the same gas , and on lighting this I think the flame will be visi- ble to all . Every one must have recognized this ma- terial . It is a well - known substance , which we call hydro- gen ...
... flame . Here we have a very large bell full of the same gas , and on lighting this I think the flame will be visi- ble to all . Every one must have recognized this ma- terial . It is a well - known substance , which we call hydro- gen ...
Página 91
... flame when immersed in the same medium . Evidently it supports combustion with great vigor , and , in order to illustrate this point still more strik- ingly , I will introduce into another bell of the same gas a spiral of watch - spring ...
... flame when immersed in the same medium . Evidently it supports combustion with great vigor , and , in order to illustrate this point still more strik- ingly , I will introduce into another bell of the same gas a spiral of watch - spring ...
Página 100
... flame as it is gradually supplied from the jet , and the energy , instead of being expended in driving back the air , and thus determining that vio- lent commotion in the atmosphere which caused the noise , is here manifested wholly as ...
... flame as it is gradually supplied from the jet , and the energy , instead of being expended in driving back the air , and thus determining that vio- lent commotion in the atmosphere which caused the noise , is here manifested wholly as ...
Palavras e frases frequentes
acetic ether aëriform alcohol alkali atom of oxygen atoms of hydrogen Avogadro burning butyric acid calcic called carbonic dioxide charcoal chemical change chemist chemistry chlorine color combination combustion consists contain criths cubic cubic centimetres cule definite elementary substances elements energy equal ether evidence example experiment fact film flame formic acid gases glass grammes H₂O heat Hence hydrate hydrochloric acid hydrogen hydrogen gas hydrogen-atoms illustrate inch iron lecture light liquid litre mass material metal microcriths mole molecular structure molecular weight molecule of oxygen molecule of water molecules nitric acid nitro-glycerine nitrogen nitrous oxide notice number of molecules obtained oxide oxygen oxygen gas particles phenomena phosphorus polarized pole potassic pounds pressure principle proportions quantivalence radical reaction result salt simple sodium solid solution specific gravity sugar sulphur symbol temperature theory tion vapor volatile volume wholly
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Página 38 - Avogadro's principle or hypothesis, which states that equal volumes of all gases under the same conditions of temperature and pressure contain the same number of molecules, was the extension of Dalton's Atomic Theory necessary to put the theoretical interpretation of chemistry on a solid foundation.
Página 200 - ... human agency can withstand, does it seem as if any power could undo that work of destruction, and rebuild those beams and rafters which are disappearing in the flames ? Yet in a few years they will be rebuilt. This mighty force will be overcome ; not, however, as we might expect, amidst the convulsion of nature, or the clashing of the elements, but silently, in a delicate leaf waving in the sunshine.
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Página 324 - AUSTIN FLINT, Jr., MD Complete in Five Volumes, octavo, of about 500 pages each, with 105 Illustrations. Cloth, $22.00; sheep, $27.00. Each volume sold separately. Price, cloth, $4.50; sheep, $5.50. The fifth and last volume has just been issued. The above is by far the most complete work on human physiology in the English language.