The Second Step in Chemistry, Or the Student's Guide to the Higher Branches of the ScienceChurchill, 1864 - 774 páginas |
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Página xii
... anhydrides , 642 - Replacement of the oxygen in the acids proper and the anhydrides by sulphur , & c . , 648 - Method of Heintz for the separation of the fatty acids , 652 - Liebig's method , 655 - Determina- tion of the melting point ...
... anhydrides , 642 - Replacement of the oxygen in the acids proper and the anhydrides by sulphur , & c . , 648 - Method of Heintz for the separation of the fatty acids , 652 - Liebig's method , 655 - Determina- tion of the melting point ...
Página 126
... upon the same plan or type , and that instead of regarding oxygen salts as composed of an oxide of a The " First Step in Chemistry , " ! : metal and the anhydride of an hydrated oxygen acid 126 BINARY THEORY OF SALTS .
... upon the same plan or type , and that instead of regarding oxygen salts as composed of an oxide of a The " First Step in Chemistry , " ! : metal and the anhydride of an hydrated oxygen acid 126 BINARY THEORY OF SALTS .
Página 127
Robert Galloway. : metal and the anhydride of an hydrated oxygen acid , they might be regarded as composed of a metal and a compound salt radical , having the same chemical relations as the radicals in the hydrogen acids . According to ...
Robert Galloway. : metal and the anhydride of an hydrated oxygen acid , they might be regarded as composed of a metal and a compound salt radical , having the same chemical relations as the radicals in the hydrogen acids . According to ...
Página 153
... has the following per - centage composition : - Magnesia Oxide of ammonium - 16:30 · 10.60 Phosphoric anhydride ( PO ) Water · 29.09 - 44:01 -100.00 256. To find the rational formula of this salt , POLYMERIC ISOMORPHISM . 153.
... has the following per - centage composition : - Magnesia Oxide of ammonium - 16:30 · 10.60 Phosphoric anhydride ( PO ) Water · 29.09 - 44:01 -100.00 256. To find the rational formula of this salt , POLYMERIC ISOMORPHISM . 153.
Página 166
... anhydrides , also correspond in composition and properties . SO , 2 SO , Se O , Te O , Se O , Te O , The lower oxides are volatile , whilst the higher ones are decomposed at a red heat , with liberation of oxygen 166 THE SULPHUR GRoup .
... anhydrides , also correspond in composition and properties . SO , 2 SO , Se O , Te O , Se O , Te O , The lower oxides are volatile , whilst the higher ones are decomposed at a red heat , with liberation of oxygen 166 THE SULPHUR GRoup .
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The Second Step in Chemistry, Or the Student's Guide to the Higher Branches ... Robert Galloway Sin vista previa disponible - 2017 |
The Second Step in Chemistry, Or the Student's Guide to the Higher Branches ... Robert Galloway Sin vista previa disponible - 2017 |
Términos y frases comunes
according acetic action alcohol alcohol radicals aldehyde ammonia ammonium amount appears atomic weights bases becomes bismuth bodies boiling point bromide C₂ carbonic carbonic acid chemical chloride combination composition compounds considered constitution contain converted corresponding crystals decomposed decomposition density derivatives determined diatomic diffusion distillation double elements employed equal equivalent ether ethyl ethylene evolved example EXERCISES existence experiments formation formed formula give H₁ H₂ hydrated hydride hydrogen inches iodide less liquid means measure mercury metals method mixture molecule monatomic nitrogen O₂ observed obtained organic oxide oxygen phosphorus potash potassium prepared present pressure primary produced properties proportion quantity radicals reaction relation replaced represented salts secondary separation silver sodium solid solution specific heat student substances substitution sulphuric acid takes temperature term treated tube units vapour volatile volume zinc
Pasajes populares
Página 489 - When the formulae of inorganic chemical compounds are considered, even a superficial observer is struck with the general symmetry of their construction ; the compounds of nitrogen, phosphorus, antimony, and arsenic especially exhibit the tendency of these elements to form compounds containing...
Página 693 - The colloidal is, in fact, a dynamical state of matter, the crystalloidal being the statical condition. The colloid possesses Energia. It may be looked upon as the probable primary source of the force appearing in the phenomena of vitality. To the gradual manner in which colloidal changes take place (for they always demand time as an element) may the characteristic protraction of chemico-organic changes also be referred.
Página 198 - A very valuable use of electro-chemical equivalents will be to decide, in cases of doubt, what is the true chemical equivalent, or definite proportional, or atomic number of a body ; for I have such conviction that the power which governs electro-decomposition and ordinary chemical attractions is the same...
Página 198 - I have such conviction that the power which governs electro-decomposition and ordinary chemical attractions is the same ; and such confidence in the overruling influence of those natural laws which render the former definite, as to feel no hesitation in believing that the latter must submit to them also.
Página 692 - Another and eminently characteristic quality of colloids is their mutability. Their existence is a continued metastasis. A colloid may be compared in this respect to water while existing liquid at a temperature under its usual freezing point, or to a supersaturated saline solution.
Página 690 - While soluble crystalloids are always highly sapid, soluble colloids are singularly insipid. It may be questioned whether a colloid, when tasted, ever reaches the sentient extremities of the nerves of the palate, as the latter are probably protected by a colloidal membrane, impermeable to soluble substances of the same physical constitution.
Página 692 - The inquiry suggests itself whether the colloid molecule may not be constituted by the grouping together of a number of smaller crystalloid molecules, and whether the basis of colloidality may not really be this composite character of the molecule.
Página 141 - Mercuric iodide separates from solution, and likewise sublimes at a very gentle heat, in scarlet tables belonging to the dimetric system; but when sublimed at a higher temperature in sulphur-yellow, rhombic tables of the monoclinic system. The red crystals turn yellow when heated, and resume their red tint on cooling. The yellow crystals obtained by sublimation retain their colour when cooled ; but, on the slightest rubbing or stirring with a pointed instrument, the part which is touched turns scarlet,...
Página 690 - A certain parallelism is maintained between the two classes, notwithstanding their differences. The phenomena of the solution of a salt or crystalloid probably all appear in the solution of a colloid, but greatly reduced in degree. The process becomes slow; time, indeed, appearing essential to all colloidal changes. The change of temperature, usually occurring in the act of solution, becomes barely perceptible.
Página 690 - It has been observed that vegetable gum is not digested in the stomach. The coats of that organ dialyse the soluble food, absorbing crystalloids and rejecting all colloids. This action appears to be aided by the thick coating of mucus which usually lines the stomach. The secretion of free hydrochloric acid during digestion — at times most abundant — appears to depend upon processes of which no distinct conception has been formed. But certain colloidal decompositions are equally inexplicable upon...