Elements of Chemistry: Including the Recent Discoveries and Doctrines of the ScienceJ. Grigg, 1828 - 499 pagina's |
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Veelvoorkomende woorden en zinsdelen
acetic acid gas affinity alcohol alkali ammonia animal antimony arsenic atmosphere atomic weight atoms of oxygen atoms of water baryta Berzelius bodies boiling caloric carbonic acid carburetted charcoal chemical chemists chloric acid chlorine colour colourless combination combustion composed composition compound consists contains converted copper crystals Davy decomposed decomposition deutoxide dilute disengaged dissolved Dr Thomson electricity employed ether evaporation ferrocyanate fluid gases Gay-Lussac glass hydriodic hydriodic acid hydrogen hydrogen gas insoluble iodine iron lime liquid magnesia manganese matter mercury metallic mixed mixture muriatic acid neutral nitrate nitric acid nitrogen nitrous odour oxalic oxide oxygen oxygen gas peroxide phosphoric acid phosphorus platinum potash potassa potassium precipitate principle procured properties proportion protoxide pure quantity red heat salts silver Sir H soda solid soluble in water solution specific gravity strontia substances sulphate sulphuretted hydrogen sulphuric acid temperature Thénard tion tube unite vapour vegetable vessels volatile volume zinc
Populaire passages
Pagina 311 - ... replaced them with this inferior compound. The art of tinning copper consists in covering that metal with a thin layer of tin, in order to protect its surface from rusting. For this purpose, pieces of tin are placed upon a well-polished sheet of copper, which, if the process is skilfully conducted, adhere uniformly to its surface. The oxidation of the tin — a circumstance which would entirely prevent the success of the operation — is avoided by employing fragments of resin, or muriate of...
Pagina 50 - Consequently, the pressure or whole weight upon any one particle arises solely from those of its own kind. " 2. The force of steam from all liquids is the same at equal distances above or below the several temperatures at which they boil in the open air : and that force is the same under any pressure of another elastic fluid as it is in vacua.
Pagina 402 - In a short time, we shall observe the syrup to become muddy, and a multitude of air bubbles to form around the ferment ; these unite, and, attaching themselves to particles of the yeast, rise along with it to the...
Pagina 335 - ... and when recently prepared, is exceedingly caustic to the taste, and touch. By age its caustic property is gradually lost, in consequence of the absorption of carbonic acid from the atmosphere. Potash is chiefly employed in making soft soap and glass. The bi-carbonate of potash is prepared by transmitting a current of carbonic acid gas through a solution of the carbonate.
Pagina 99 - 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.
Pagina 409 - Plants absorb carbonic acid from the air, under certain circumstances, and emit oxygen in return. When a healthy plant, the roots of which are supplied with proper nourishment, is exposed to the direct solar beams in a given quantity of atmospheric air, the carbonic acid, after a certain interval, is removed, and an equal volume of oxygen is substituted for it. If a fresh portion of carbonic acid is supplied, the same result will ensue. But...
Pagina 117 - 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...
Pagina 407 - In the germ two parts, the radicle and plumula, may be distinguished, the former of which is destined to descend into the earth and constitute the root, the latter to rise into the air and form the stem of the plant. The office of the seed-lobes is to afford nourishment to the young plant, until its organization is so far advanced, that it may draw materials for its growth from extraneous sources. For this reason seeds are composed of highly nutritious ingredients. The chief constituent of most of...
Pagina 76 - Sulphuret and carburet of iron, for example, signify compounds of sulphur and carbon with iron. The different oxides or sulphurets of the same substance, were distinguished from one another by some epithet which was commonly derived from the colour of the compound, such as the black and red oxides of iron, the black and red sulphurets of mercury. Though this practice is still continued occasionally, it is now more customary to distinguish degrees of oxidation by derivatives from the Greek.