Inorganic chemistry for elementary classesJohn Heywood, 1871 - 90 pages |
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Expressions et termes fréquents
2SO₂Ho₂ A.-What ammonia ammonic ammonic carbonate anhy Antimonious argentic nitrate Atomic weight Baric bleaching Boric acid Boric anhydride Calcic carbonic anhydride Carbonic oxide charcoal chlorate Chloric acid chloride Chlorous CO₂ colour combination combustion common salt composition of water compound radical containing convert copper criths crystallized cubic decomposed Density dride E.-Give equation Ferric Ferrous flask formula gases grammes hydrate hydrochloric acid hydrogen hydroxyl Hypochlorous iodine iron lime liquid litre litre weighs manganic oxide mercury metal metre mixture Molecular weight molecule Monads Monads Of Diads Name of Acid Name of Salts nitrate nitric acid nitric peroxide nitrogen nitrous anhydride number of atoms odour OH₂ oxygen ozone Perchloric acid phosphoric anhydride Plumbic potassic chlorate Preparation.-(1 prepared pressure produced properties red-hot retort sodium soluble in water solution specific gravity substance sulphate sulphide sulphuretted hydrogen sulphuric acid sulphurous anhydride Symbol of Acid temperature Tetrads tube vapour volumes of hydrogen Zincic
Fréquemment cités
Page 10 - Specific weight, or specific gravity, is the number which expresses the ratio which the weight of a cubic inch of the body bears to the weight of a cubic inch of distilled water at a temperature of 15 '5° C.
Page 7 - The smallest proportion by weight in which the element enters into or is expelled from a chemical compound, — the smallest weight of hydrogen so entering or leaving a chemical compound being taken as unity.
Page 6 - ... human welfare, form such a small part of the earth that their volume would not be missed. MOLECULE: A molecule is the smallest quantity of an element or compound which can exist in the free state. Molecules are composed of atoms.
Page 12 - Base. — A chemical term, usually applied to denote the earth, the alkali, or the metal which is combined with an acid to form a salt. Baths — Vessels for distillation or digestion, contrived to transmit • heat gradually...
Page 60 - The production of this gas in an ordinary red-hot coal fire is often observed ; oxygen of the air, which enters at the bottom of the grate, combines with the carbon of the coal, forming carbon dioxide ; this substance then passing upwards over the red-hot coals, parts with half its oxygen to the red-hot carbon : thus : CO2 + C = 2CO.
Page 17 - 3665 per cent., or, less accurately -j^-j part of their bulk at 0°. The average weight of the atmosphere at the level of the sea is that of a column of mercury 760 millimetresf high. Now, according to the law of Boyle and Marriotte, the volume of a gas is inversely, and its density directly as the pressure which it sustains if the temperature remain constant. We have, therefore, no difficulty in reducing gases to the standard agreed upon by chemists, viz., a temperature of 0° C. and 760 mm. atmospheric...
Page 49 - ... filled with water. The gas given off from each terminal rises and collects in the upper portion of the tubes. Oxygen rises from the terminal by which the current enters the liquid and hydrogen from the terminal by which it leaves. Oxygen is therefore collected in one tube and hydrogen in the other. Two volumes of hydrogen and one volume of oxygen unite to form water, and hence in its decomposition the volume of hydrogen collected is twice that of the oxygen. Other liquids may be decomposed by...
Page 53 - Of lime, is made by passing chlorine gas into a low room, on the floor of which a layer of slaked lime, two inches thick, is laid until no more gaa is absorbed.
Page 7 - ... occupies, under like conditions of temperature and pressure, the same volume as one part by weight of hydrogen.
Page 7 - ... containing one atom ; mercury, cadmium, zinc. Diatomic molecules, containing two atoms ; hydrogen, chlorine, bromine, iodine, fluorine, oxygen, nitrogen, sulphur. Triatomic molecules, containing three atoms; ozone (allotropic oxygen). Tetratomic molecules, containing four atoms ; phosphorus and arsenic. Hexatomic molecules, containing six atoms ; sulphur (at temperatures but little removed from its boiling point). The molecules of compounds occupy the same volume as one molecule of hydrogen,...