Conversations on Chemistry: In which the Elements of that Science are Familiarly Explained, and Illustrated by Experiments, and 38 Engravings on Wood |
Other editions - View all
Common terms and phrases
absorb acid gas affinity alcohol alkali ammonia animal heat appears atmospheric air attraction blood boiling bones breathe burn called caloric carbonat carbonic acid carbonic acid gas Caroline charcoal chemical chemistry chemists chyle cold color combination combustion composed condenser consists constituent contains converted copper cylinder decomposed decomposition dissolved distilled earth effect electricity Emily ether experiment fermentation fire flame fluid freezing gases gelatine glass hydrogen hydrogen gas ingredients iron kind lamp latent heat light lime liquid lungs matter means metals milk mineral mixed mucilage muriatic acid nature nitric acid nitrogen nourishment obtained oxy-muriatic oxyd oxygen oxygen gas particles peculiar phosphorus piston plant potash Pray principles produced properties proportion prussic acid purpose respiration Salts formed separate simple bodies Sir H solid solution steam sugar sulphat sulphuric acid suppose surface takes place temperature thermometer tion tube vapor vegetable vessel volatile Voltaic battery whilst wine wire wood
Popular passages
Page ii - Co. of the said district, have deposited in this office the title of a book, the right whereof they claim as proprietors, in the words following, to wit : " Tadeuskund, the Last King of the Lenape. An Historical Tale." In conformity to the Act of the Congress of the United States...
Page ii - An act for the encouragement of learning, by securing the copies of Maps, Charts, and Books, to the authors and proprietors of such copies, during the times therein mentioned,' and extending the benefits thereof to the arts of designing, engraving, and etching historical and other prints.
Page 335 - They are obtained by evaporation and cooling. Ethers. — Volatile liquids formed by the distillation of some of the acids with alcohol . Evaporation. — The conversion of fluids into vapour by heat. This appears to be nothing more than a gradual solution of the aqueous particles in atmospheric air, owing to the chemical attraction of the latter for water. Eudiometer. — An instrument invented by Dr. Priestley for determining the purity of any given portion of atmospheric air. The science of investigating...
Page ii - Mrs. Marcet's Conversations on Chemistry, in which the Elements of that Science are familiarly explained and illustrated by Experiments.
Page 334 - Deflagration. The vivid combustion that is produced whenever nitre, mixed with an inflammable substance, is exposed to a red heat. It may be attributed to the extrication of oxygen from the nitre, and its being transferred to the inflammable body ; as any of the nitrates or oxygenized muriates will produce the same effect.
Page 62 - Such was, from time immemorial, the generally received opinion respecting the cause of dew ; but it has been very recently proved by a course of ingenious experiments of Dr. Wells, that the deposition of dew is produced by the cooling of the surface of the earth, which he has shown to take place previously to the cooling of the atmosphere ; for on examining the te-mperature of a plot of grass just before the dewfall, he found that it was considerably colder than the air a few feet above it, from...
Page 47 - IN our last conversation, we begau to examine the tendency of caloric to restore an equilibrium of temperature. This property when once well understood, affords the explanation of a great variety of facts which appeared formerly unaccountable. You must observe, in the first place, that the effect of this tendency is gradually to bring all bodies that are in contact to the same temperature. Thus the fire which burns in the grate, communicates its heat from one object to another, till every part of...
Page v - ... establishment of those public institutions, open to both sexes, for the dissemination of philosophical knowledge, which .clearly prove that the general opinion no longer excludes women from an acquaintance with the elements of science ; and. on the other, she flattered herself, that whilst the impressions made upon her mind, by the wonders of Nature, studied in this new point of view, were still fresh and strong, she might perhaps succeed the better in communicating to others the sentiments she...
Page 53 - Emily. I see two currents, the one rising along the sides of the phial, the other descending in the centre : but I do not understand the reason of this. Mrs. B. The hot water communicates its caloric, through the medium of the phial, to the particles of the fluid nearest to the glass; these dilate and ascend laterally to the surface, where, in parting with their heat, they are condensed, and in descending, form the central current. Caroline. This is, indeed, a very clear and satisfactory experiment...
Page 105 - ... without some elevation of temperature. I shall now introduce the wire into the receiver, by quickly changing the stoppers. Caroline. Is there no danger of the gas escaping while you change the stoppers ? Mrs. B. Oxygen gas is a little heavier than atmospherical air, therefore it will not mix with it very rapidly; and, if I do not leave the opening uncovered, we shall not lose any — — Caroline. Oh, what a brilliant and beautiful flame ! Emily. It is as white and dazzling as the sun ! — Now...