Elementary Inorganic ChemistryLongmans, Green and Company, 1897 |
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alkali ammonia ammonium chloride ammonium nitrite apparatus atom beaker blue boiling bottle bubble burn burnt calcium called carbon dioxide caustic soda charcoal chemical action chemical change chemists chlorine collected colour colourless combine compound contains cooled copper cork crystals cylinder decomposed delivery tube density dilute dissolved drops elements equation Experiment ferrous flame flask formed gaseous gases gently glass tube grams H₂ H₂O H₂SO heat hydrochloric acid hydroxide iodine iron lighted taper lime water liquid litmus litre magnesium manganese dioxide melts mercury metals mixed mixture nitrate nitric acid nitrogen peroxide Notice obtained ordinary oxide oxygen pass phosphorus piece platinum pneumatic trough potassium chlorate potassium nitrate powdered pressure produced proportion salt shown in Fig silver small quantity smell sodium carbonate sodium nitrate solid solution steam substance sulphate sulphide sulphur dioxide sulphuretted hydrogen sulphuric acid takes fire temperature test-tube unite vapour weight wire zinc
Popular passages
Page 74 - With air or oxygen, hydrogen forms a highly explosive mixture, especially in the proportion of two volumes of hydrogen to one volume of oxygen. It is, therefore, important to take care that free hydrogen does not mix mechanically with air or with free oxygen.
Page 158 - ... combination; and as all other experiments with oxygen concur, the semi-molecule of oxygen is to be received as its atom, and H2 0 is the proper formula for what is both the gaseous molecule and the atom of water. From the densities we may also deduce that 16 is the atomic weight of oxygen, ie that an atom of oxygen is sixteen times as heavy as an atom of hydrogen. Similarly from the densities of ammonia and of its constituents, we learn that the atom of nitrogen is the semi-molecule, and that...
Page 163 - The density of a gas is the weight of it as compared with the weight of an equal volume of some other gas which is chosen as the standard.
Page 117 - The same compound always contains the same elements combined together in the same proportion by weight; or expressed in other words, The -weights of the constituent elements of every compound bear an unalterable ratio to each other, and to the -weight of the compound formed. II. Law of Multiple Proportions.— When the same t-wo elements combine together to...
Page 74 - But if he mixed the gases exactly in the proportion of two measures of hydrogen to one of oxygen...
Page 89 - Barometer. The barometer is an instrument for measuring the pressure of the atmosphere. In its simplest form it consists of a tube about 36 inches long, hermetically closed and having a vacuum at the upper end, and containing mercury.