Applied Chemistry: An Elementary Text Book for Secondary SchoolsC.V. Mosby Company, 1922 - 461 σελίδες |
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Σελίδα 22
... needed in the affairs of the home and in giving added interest to everyday life ; such , that these affairs may be administered the more wisely and that nature may speak the more intelligibly ; such that those who read may not only add ...
... needed in the affairs of the home and in giving added interest to everyday life ; such , that these affairs may be administered the more wisely and that nature may speak the more intelligibly ; such that those who read may not only add ...
Σελίδα 36
... needed , an ordinary per- son requires from two to three pints of water per day , in summer more than in cold weather . Plants , likewise , must have water to enable them to absorb the necessary substances of food value from the soil ...
... needed , an ordinary per- son requires from two to three pints of water per day , in summer more than in cold weather . Plants , likewise , must have water to enable them to absorb the necessary substances of food value from the soil ...
Σελίδα 52
... needed if the mixture is used . By putting equal amounts of potassium chlorate into each of two test tubes and adding to one a small quantity of manganese dioxide , it is interesting to note that the mixture will give the oxygen test at ...
... needed if the mixture is used . By putting equal amounts of potassium chlorate into each of two test tubes and adding to one a small quantity of manganese dioxide , it is interesting to note that the mixture will give the oxygen test at ...
Σελίδα 58
... a very unstable body , and if much heat is needed or produced in the method used for pre- paring oxygen , most of the ozone will be decomposed al- most immediately into ordinary oxygen . By the meth- ods 58 APPLIED CHEMISTRY.
... a very unstable body , and if much heat is needed or produced in the method used for pre- paring oxygen , most of the ozone will be decomposed al- most immediately into ordinary oxygen . By the meth- ods 58 APPLIED CHEMISTRY.
Σελίδα 76
... needed . Lack of proper ventilation is most apt to be found in school rooms or other places where people congregate in considerable numbers , as photoplay houses , theaters , and the like . Health boards in many cities require that ...
... needed . Lack of proper ventilation is most apt to be found in school rooms or other places where people congregate in considerable numbers , as photoplay houses , theaters , and the like . Health boards in many cities require that ...
Άλλες εκδόσεις - Προβολή όλων
Applied Chemistry: An Elementary Text Book for Secondary Schools (Classic ... Fredus N. Peters Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2016 |
Applied Chemistry: An Elementary Text Book for Secondary Schools (Classic ... Fredus N. Peters Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
2H₂O alcohol alkali alloys alum aluminum ammonia ammonium amount antimony arsenic arsine atomic weight blue boiling bromine burning calcium called carbon dioxide carbon monoxide cent Characteristics chemical coal color combustion common salt compounds contain copper crystals decomposed dissolved elements equation Exercises for Review ferric ferrous flame foods formula furnace gases Give glass grams H₂O H₂SO heat hence hydrate hydrochloric acid hydrogen chloride hydroxide ignited iodine ions iron known light lime liquid liter magnesium melting mercury metal method mixed mixture molecular weight molecules monoxide Name nitrate nitric acid nitrogen obtained occurs oxide oxygen ozone phosphorus platinum potassium potassium chlorate pounds powder prepared pressure produced quantities reaction removed seen silicate silver soap soda sodium carbonate sodium hydroxide solid soluble in water solution starch substances sugar sulphate sulphide sulphur dioxide sulphuric acid temperature tion tube usually valence vapor variety volume yellow zinc zine
Δημοφιλή αποσπάσματα
Σελίδα 173 - ... gas may be expelled from a liquid, viz. : 1. When the liquid is supersaturated, the excess gas is expelled. 2. By heating the liquid, when some of the gas is expelled due to an increase in its volume. 3. By pressure reduction, as in the Elmore vacuum process, where, according to the law of Henry,14 "the amount of gas dissolved by a liquid is proportional to the pressure to which the gas is subjected.
Σελίδα 100 - Weights. — The molecular weight of a substance is the sum of the weights of the atoms constituting a molecule of that particular substance.
Σελίδα 251 - ... in the form of a fine powder, known as flowers of sulphur, and composed of minute crystals.
Σελίδα 266 - In this way he had lithium, glucinum, boron, carbon, nitrogen, oxygen, fluorine, sodium, magnesium, aluminum, silicon, phosphorus, sulphur, chlorine, potassium, calcium, and so on.
Σελίδα 96 - Risteen's work upon molecules (now for many years a standard authority), the distance from the center of one molecule to the center of its neighbor is put, on the average, as ten times the molecular diameter.
Σελίδα 101 - Avogadro that equal volumes of all gases under the same pressure and temperature contain the same number of molecules.
Σελίδα 89 - In the mercurial barometer at sea level, the pressure of the air supports a column of mercury 30 inches in height or, in other words, the weight of 30 inches of mercury.
Σελίδα 266 - Mendeleeff arranged the elements in the order of their atomic weights, beginning with the lightest, but omitting hydrogen.
Σελίδα 384 - Orichalcum may be defined as an alloy of copper and zinc in which the proportion of zinc is high enough to give it a color that is appreciably different from that of copper, and in which the proportion of any other metal, or combination of other metals, is considerably lower than that of the zinc.
Σελίδα 26 - Per Cent Oxygen 49.98 Silicon 25.30 Aluminum 7.26 Iron 5.08 Calcium 3.51 Magnesium , 2.50 Sodium 2.28 Potassium 2.23 Hydrogen 0.94 Titanium 0.30 Carbon 0.21 Chlorine and Bromine 0.15 Phosphorus 0.09 Manganese 0.07 All others . 0.10 Total 100.00 Table II.