Elements of chemistry including the recent discoveries and doctrines of the science, Volume 11837 |
Palavras e frases frequentes
acid gas affinity alkali ammonia atmosphere atoms attraction baryta Berzelius binoxide of nitrogen bodies boiling bromine carbonic acid cause charcoal chemical action chemists chloric acid chlorine colour colourless combination combustion compound condensed conductor contains copper crystals Davy decomposed decomposition degree density dilute dissolved effect elasticity elements equal equivalent ether evaporation excited experiments fluid former gaseous gases Gay-Lussac glass heat hence hydrochloric acid hydrogen hydrogen gas hydrosulphuric acid inches iodic acid iodine iron latter light lime liquid magnet mercury metallic mixed mixture needle nitrate nitric acid nitrogen nitrous oxide oxygen oxygen gas particles pass peroxide phenomena Phil phosphoric acid phosphorus plate platinum pole potassa potassium produced properties proportion protoxide pure quantity ratio rays refraction salt selenic acid selenious soda solid solution substances sulphate sulphuret sulphuric acid surface symb temperature thermometer tion tube unite vapour vessel volume weight wire zinc
Passagens conhecidas
Página 196 - The production of cold seldom or never takes place during combination, except when heat is rendered insensible by the conversion of a solid into a liquid, or a liquid into a gas.
Página 305 - Phosphorus is exceedingly, inflammable. Exposed to the air at common temperatures, it undergoes slow combustion, emits a white vapour of a peculiar alliaceous odour, appears distinctly luminous in the dark, and is gradually consumed.
Página 222 - Hence we may conclude, that, in volatile vitriolic acid, a single ultimate particle of sulphur is intimately united only to a single particle of dephlogisticated air; and that, in perfect vitriolic acid, every single particle of sulphur is united to two of dephlogisticated air, being the quantity necessary to saturation.
Página 92 - In the figure the sine of the angle of refraction is to the sine of the angle of incidence as 1 to...
Página 155 - If the wire is on the same horizontal plane with the needle, no declination whatever takes place ; but the magnet shows a disposition to move in a vertical direction, the pole next the negative side of the battery being depressed when the wire is to the west of it, and elevated when it is placed on the east side.
Página 240 - It was supposed that when a body burns phlogiston escapes from it, and that when the body has lost phlogiston it ceases to be combustible, and is then a dephlogisticated or incombustible substance. A metallic oxide was consequently regarded as a simple substance, and the metal itself as a compound of its oxide with phlogiston. The heat and light which accompany combustion were attributed to the rapidity with which phlogiston is evolved during the process. The discovery of oxygen and the experiments...
Página 246 - When the action of heat, the electric spark and spongy platinum no longer cause an explosion, a silent and gradual combination between the gases may still be occasioned by them. Oxygen and hydrogen gases unite slowly with one another when exposed to a temperature above the boiling point of mercury, and below that at which glass begins to appear luminous in the dark. An explosive mixture, diluted with air to too great a degree to explode by electricity, is made to unite silently by a succession of...
Página 289 - The agreeable pungency of beer, porter and ale is, in a great measure, owing to the presence of carbonic acid ; by the loss of which, on exposure to the air, they become stale. All kinds of spring and...
Página 45 - ... being the ratio of 1 to 23. Hence if equal quantities of heat be added to equal weights of water, spermaceti oil, and mercury, their temperatures in relation to each other will be expressed by the numbers 1, 2, and 23; or, what amounts to the same, in order to increase the temperature of equal weights of those substances to...
Página 168 - ... a way. The electrodes are the surfaces, whether of air, water, metal, or any other substance, which serve to convey an electric current into and from the liquid to be decomposed. The surfaces of this liquid which are in immediate contact with the electrodes, and where the elements make their appearance, are termed anode, and cathode, from...