Descriptive Inorganic General Chemistry: A Text Book for CollegesAllyn and Bacon, 1894 - 550 páginas |
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Descriptive Inorganic General Chemistry: A Text Book for Colleges Paul Caspar Freer Vista completa - 1895 |
Descriptive Inorganic General Chemistry: A Text Book for Colleges Paul Caspar Freer Vista completa - 1895 |
Descriptive Inorganic General Chemistry. a Text Book for Colleges Paul Caspar Freer Sin vista previa disponible - 2015 |
Términos y frases comunes
alkali metals aluminium ammonia ammonium anhydride antimony arsenic atmosphere atomic weight barium bismuth boiling bromine burning calcium carbon dioxide changes chemical chlorate chloric acid Cl₂ cobalt color colorless combustion contain copper corresponding crystalline crystals decomposed decomposition dilute dissolved elements ferric ferrous formation formula weight gases glass grams H Cl H₂ H₂O H₂SO halogens heat hydrobromic acid hydrochloric acid hydrogen atoms hydrogen compounds hydrogen sulphide hydroiodic acid insoluble iodide iodine iron isomorphous latter liquid magnesium manganese dioxide manganous means melts mercury mixture molecular weight molecule monoxide nitrate nitric acid nitrogen not-metallic not-metals O₂ oxide oxygen phosphorus potassium hydroxide precipitated prepared produced properties quantities reaction readily resembles salts selenium silicon silver sodium chloride soluble in water solution specific gravity substance sulphate sulphur dioxide sulphuretted hydrogen sulphuric acid takes place temperature trioxide tube unite valence vapor zinc он
Pasajes populares
Página 529 - Never handle the glass tube unless it is cold. Open the tube by wrapping a towel around it and exposing the tip of the long, sealed end to the flame; after a little air has been admitted in this way, you can break open the tube. Never attempt to break open a sealed glass tube unless you have taken this precaution. The low kindling temperature of ordinary phosphorus can be shown by dissolving a little in carbon bisulphide and then pouring a few drops of this solution on a piece of filter paper. After...
Página 177 - ... that this is not the case is due to the fact that iodine is much less not-metallic in its character than is chlorine.
Página 71 - IB the tube on the negative side first filled with gas 1 gases combine in the proportion of two volumes of hydrogen to one of oxygen.
Página 352 - Those two investigators proved that the greater the combining weight of any given element was found to be, the less was the specific heat (capacity for heat) of that element in the solid form, so that the product of the combining weight of any given element and its specific heat was found to be very nearly equal to the same product for any other element. This law is susceptible of a very simple physical explanation. The specific heat of a body is the quantity of heat necessary to increase the temperature...
Página 41 - ... arrives at 0°, when freezing begins and the crust of ice formed, floating on the surface, will act as a protection to the water below. As a consequence water freezes on the surface and not from below upward. In freezing, water expands, the specific gravity of ice being .9167; on cooling below its freezing point ice continuously contracts, following the usual law. The freezing point of water, or rather the melting point of ice, at standard atmospheric pressure is taken as 0° on the centigrade...
Página 386 - ... drying and shrinking. Otherwise take it off the mirror and trim the base flat so that it is parallel to the plane of the teeth. If the mirror really was pressed firmly against the upper teeth while the impression was being made, this should involve no more...
Página 73 - But if, instead of comparing weights, we compare volumes, two volumes of hydrogen unite with one of oxygen to form water.
Página 251 - The most important alloy of antimony is composed of one part of that metal to four of lead, this substance is used as type metal, copper and bismuth are occasionally added to this; the metal used for stereotyping also contains tin. The hydrogen compound of antimony is called stibine. It is produced, like arsine, by the action of acids on the alloy of antimony and zinc * or by the action of nascent hydrogen on soluble compounds of antimony, the gas is therefore produced by the same means which furnish...
Página 168 - The quantity of carbon dioxide in a given volume of the air varies slightly ; hut, normally, it is about three parts in ten thousand, and it seems that the proportion of carbon dioxide is greater at night than in the daytime, and in summer than in winter. In the higher regions of the atmosphere, where vegetation is impossible, the amount of the gas may even increase to eleven parts in ten thousand,* while a continued rainstorm may diminish it to two and a quarter.
Página 361 - Position of isotopes. If the elements are arranged in the order of their increasing atomic weights, it is not possible to accomodate the large number of isotopes in the periodic table.