Lessons in Elementary Chemistry: Inorganic and OrganicWood, 1868 - 383 Seiten |
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Häufige Begriffe und Wortgruppen
acetic acid acting action alcohol aldehyde alkaline ammonia ammonium antimony arsenic arsenious oxide atoms of hydrogen barium bodies bromine burns C₂ H calcium carbonic acid carbonic dioxide caustic potash chemical chloric acid chloride color colorless liquid Combining Weight combustion composition compounds containing copper corresponding crystalline crystals cyanide decomposed decomposition Density dissolves distillation ether ethyl fermentation ferric flame formed formula fused gases Glycol grms H₁ H₂ H₂O heated hence hydrate hydric hydro hydrochloric acid hydrogen insoluble iodide iodine iron known magnesium melts mercury metal mixture molecules nitrate nitric acid nitrogen O₂ obtained occurs oxalic acid oxide oxygen phosphate phosphorus possessing potassium potassium chlorate powder precipitate prepared properties pure radical replaced salts silicates silver small quantities sodium solid soluble in water solution specific gravity substance sulphate sulphide sulphuretted hydrogen sulphuric acid Symbol temperature tion trioxide tube vapor volatile volume whilst yellow yields zinc
Beliebte Passagen
Seite 34 - Since two volumes of hydrogen unite with one volume of oxygen to form two volumes of water...
Seite 217 - ... vapours should be present in it. Hence the observations of the solar spectrum appear to me to prove the presence of iron vapour in the solar atmosphere with as great a degree of certainty as we can attain in any question of natural science.
Seite 5 - It has been the endeavour of the author to arrange the most important facts and principles of Modern Chemistry in a plain but concise and scientific form, suited to the present requirements of elementary instruction. For the purpose of facilitating the attainment of exactitude in the knowledge of the subject, a series of exercises and questions upon the lessons have been added. The metric system of weights and measures, and...
Seite 200 - ... communicating a green tint to a flame of hydrogen gas, which is passed over it ; and it is one of the best conductors of heat and electricity. Copper does not oxidize either in pure dry or moist air at ordinary temperatures, but if heated to redness in the air, it rapidly oxidizes to scales of copper oxide.
Seite 55 - ... can be determined by the apparatus used for the estimation of the carbonic acid, for the moisture must be removed from the air before the carbonic acid can be absorbed, .and the increase in weight of the tubes filled with pumice-stone moistened with sulphuric acid gives the weight of aqueous vapour. In general the air contains from 50 to 70 per cent. of the quantity necessary to saturate it. If the quantity be not within these limits, the air is either unpleasantly dry or moist. The next important...
Seite 273 - This body boils at 82°'5, and is insoluble in water, but soluble in alcohol and ether. It is...
Seite 23 - A number of these drops can be collected, and, upon examination, are found to consist of pure water. Hydrogen does not support the combustion of a candle, nor the life of an animal. If a burning taper is pushed up into a cylinder of this gas, held with its mouth downwards, the hydrogen burns at the mouth of the jar while the taper is extinguished ; it can, however, be relit by the flame at the mouth. Hydrogen can be poured from one vessel to another in the air; but as it is lighter than air it must...
Seite 155 - ... placed one at each end, and on the hearths of which the salt is completely decomposed. The charge of half a ton of salt is first placed in the iron pan, and then the requisite quantity of sulphuric acid is allowed to pass in upon it.
Seite 51 - ... divisions on the tube to which the mercury reaches, whilst the height of the column of mercury in the tube above the trough, together with that of the barometer, and the temperature of the air, are also read off. A quantity of pure hydrogen gas is now added, more than sufficient to unite with...
Seite 20 - ... active modification. The peculiar smell which is observed when an electrical machine is worked is caused by the presence of ozone ; and if a paper, dipped in a solution of potassium iodide and starch paste, be held opposite a point on the conductor of the machine, the paper becomes blue, owing to the liberation of iodine and the formation of a blue compound of iodine and starch. Ozone can be obtained in several other ways ; it is formed when a stick of phosphorus is allowed to hang in a bottle...