A Manual of Inorganic Chemistry ...: The non-metals

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Page 352 - When heated in the air it takes fire, and burns with a blue flame, forming white fumes of tellurium dioxide.
Page 108 - I. 87), the squares of the times of equal diffusion of gases are to one another in the ratio of their densities. Hence, by analogy, it may be inferred that the molecules of these several salts, as they exist in solution, possess densities which are to one another as the squares of the times of equal diffusion. Thus, the solution-densities of sulphate, nitrate, and hydrate of potash, are to one another as the numbers 4, 2, and 1.
Page 281 - If a fine tube is filled one-half with liquid bromine and one-half with the vapour of bromine, and after being hermetically sealed is gradually heated till the temperature is above the critical point, the whole of the bromine becomes quite opaque, and the tube has the aspect of being filled with a dark red and opaque resin.
Page 264 - ... Fluorine does not combine with oxygen. It is the only element of which this statement can be made. Comparison of the Members of the Chlorine Family. — In considering, first, the physical properties of these elements, we notice that all, with the exception of fluorine, form colored gases or vapors. At ordinary temperatures chlorine is a gas, bromine a liquid, and iodine a solid. In regard to their chemical conduct, it may be said that, in general, fluorine exhibits the strongest affinity for...
Page 103 - ... the following general law : that, under equal circumstances of temperature, water takes up, in all cases, the same volume of condensed gas as of gas under ordinary pressure.
Page 124 - ... is, it is no longer recognizable by the thermometer. This amount of heat has been sufficient, however, to convert ice or snow at 0° into water at 0° ; in other words, the heat has been used in doing the work of converting solid water into liquid water. To denote this heat, which is thus used up, and apparently becomes hidden, the term latent heat has been invented. In order to compare different quantities of heat, it is necessary to adopt some distinct quantity as our unit. It has been agreed,...
Page 103 - The pressure exerted by a mixture of gases is equal to the sum of the separate pressures which each gas would exert if it alone occupied the whole volume.
Page 15 - To form some conception of the degree of coarse-grainedness indicated by this conclusion, imagine a rain drop, or a globe of glass as large as a pea, to be magnified up to the size of the earth, each constituent molecule being magnified in the same proportion. The magnified structure would be coarser grained than a heap of small shot, but probably less coarse grained than a heap of cricketballs.
Page 235 - ... down in contact with the metal. If, however, the gauze by accident becomes strongly heated, its action ceases; it allows of the transmission of the flame, and is powerless to prevent an explosion. The well known Bunsen burner (fig. 78) partly depends for its action on this principle. It consists of a jet surmounted by a wide brass tube, at the bottom of which are several holes for the admission of air. The air and gas mix in the wide tube in such proportion that they burn at the top with a non-luminous...
Page 14 - Jointly they establish, with what we cannot but regard as a very high degree of probability, the conclusion that, in any ordinary liquid, transparent solid, or seemingly opaque solid, the mean distance between the centres of contiguous molecules is less than the 1/5,000,000, and greater than the 1/1,000,000,000 of a centimetre.

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