The Elements of Chemistry: For the Use of Schools, Academies, and Colleges

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Eldredge & brother, 1883 - Chemistry - 432 pages
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Page 52 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Page 50 - The Specific Heat of a body signifies its capacity for heat or the quantity of heat required to raise the temperature of the body one degree Fahrenheit, compared with that required to raise the temperature of an equal weight of water one degree.
Page 49 - Gases expand equally for equal increments of temperature. 4. Equal volumes of all gases, measured at the same temperature and pressure, contain the same number of particles.* 5.
Page 50 - Avogadro [1776-1856] enunciated the hypothesis that under the same conditions of temperature and pressure, equal volumes of gases contain the same number of molecules, an hypothesis espoused three years later also by Ampere, and which has played a signal part in the development of the science. These laws and hypotheses together with Charles...
Page 21 - Chemists divide the substances in nature also into SIMPLE and COMPOUND. SIMPLE SUBSTANCES are those which have never yet been decomposed, nor formed by art. COMPOUND SUBSTANCES are those which are formed by the union of two or more simple substances. The following are all the simple substances with which we are at present acquainted: CALORIC, LIGHT, OXYGEN, NITROGEN, CARBON, HYDROGEN, SULPHUR, PHOSPHORUS, the METALS, and some of the EARTHS. — All that I propose under this article is simply to state...
Page 181 - Phosphor bronze is a bronze to which phosphorus has been added for the purpose of cleansing and deoxidizing the metal. Most of the phosphorus passes off with the impurities and little remains in the metal. Manganese bronze is a bronze in which manganese has been used...
Page 50 - Avogadro (1811) suggested the hypothesis that equal volumes of all gases contain the same number of molecules, when the volumes are measured under the same conditions of temperature and pressure.
Page 209 - ... was formerly believed that in order that the separation be complete, the alloy must not contain more than 25 per cent gold. As a matter of fact, the alloy may contain up to 35 per cent gold and still the separation be successful. Pure gold is a rather soft, bright yellow metal having a high luster. It is the most malleable and ductile of all the metals, and conducts heat and electricity well. It may be beaten into very thin leaves, which transmit green light. A grain of gold may be beaten into...
Page 234 - ... it has the power of forming insoluble compounds called lakes with vegetable colouring matter, and thus renders the colour permanent by fixing it in the pores of the cloth so that it cannot be washed out; such colours are termed fast. Aluminium chloride...
Page 29 - ELEMENTS. Symbols. Atomic Weights. NAMES OF THE ELEMENTS. Symbols. Atomic Weights. Aluminium . . . Al 27.5 Mercury (hydrarAntimony (stibigyrum) . . . Hg 200 um) Sb 122 Molybdenum Mo 96 Arsenic .... A...

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