Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 7
... crystals . Mercuric chloride crystals CRED ( Poison ! ) . Apparatus : Mortar and pestle . FIG . 13 . A filter ready for use . Rub together in the mortar a crystal of potassium iodide with one of mercuric chloride . What evidence appears ...
... crystals . Mercuric chloride crystals CRED ( Poison ! ) . Apparatus : Mortar and pestle . FIG . 13 . A filter ready for use . Rub together in the mortar a crystal of potassium iodide with one of mercuric chloride . What evidence appears ...
Σελίδα 82
... crystals . Citric acid , a few crystals . Magnesium ribbon , 6 or 8 pieces , inch long . Copper foil , 2 pieces , inch inch . Zinc foil , half a dozen pieces , 1 inch × 1⁄2 inch . 1. Label six test tubes and fill them with distilled ...
... crystals . Citric acid , a few crystals . Magnesium ribbon , 6 or 8 pieces , inch long . Copper foil , 2 pieces , inch inch . Zinc foil , half a dozen pieces , 1 inch × 1⁄2 inch . 1. Label six test tubes and fill them with distilled ...
Σελίδα 122
... crystal compound of calcium sulphate with water . Its formula is CaSO4 · 2 H2O . Water kept in contact with this mineral for a sufficiently long time will dissolve about of its own weight of calcium sulphate . If the contact is less ...
... crystal compound of calcium sulphate with water . Its formula is CaSO4 · 2 H2O . Water kept in contact with this mineral for a sufficiently long time will dissolve about of its own weight of calcium sulphate . If the contact is less ...
Σελίδα 126
... crystals for each degree of hardness . Water for a family of five persons estimated as above ( 50 X 365 = 18,250 gallons ) could be softened by the use of 71⁄2 pounds of soda per annum , for each degree of hardness . The 7 pounds of ...
... crystals for each degree of hardness . Water for a family of five persons estimated as above ( 50 X 365 = 18,250 gallons ) could be softened by the use of 71⁄2 pounds of soda per annum , for each degree of hardness . The 7 pounds of ...
Σελίδα 131
... crystal ammonia . " Mixtures of soda . with just enough ammonium carbonate to impart an odor are sometimes fraudulently sold as " solid household am- monia . " Experiment 75 . Heat a small quantity ( gram ) ammonium carbonate in a ...
... crystal ammonia . " Mixtures of soda . with just enough ammonium carbonate to impart an odor are sometimes fraudulently sold as " solid household am- monia . " Experiment 75 . Heat a small quantity ( gram ) ammonium carbonate in a ...
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
100-Calorie portion acetic acid action alcohol alkali aluminium ammonia ammonium Apparatus atoms bases beaker bisulphite bleaching boiling burning calcium Calories carbohydrates carbon dioxide carbon monoxide cellulose cent per cent CHAPTER chemical change chemistry coal color combustion compounds constituents contain copper cotton crystals dilute dish dissolved dyes elements esters ethyl Experiment Expt ferric fibers filter flame formula fuel value gases glass glucose glycerol grams H₂O hydrochloric acid hydrogen hydrolysis inch insoluble iron limewater liquid liter litmus paper magnesium Materials metal mixture molecules nitrate nitrogen odor ounces oxide oxygen phosphorus piece potassium potassium hydroxide pound powder precipitate Protein Fat Carbo proteins radicle reaction reagent residue salts silk soap soda sodium bisulphite sodium carbonate sodium chloride sodium hydroxide solid soluble starch substances sugar sulphate sulphuric acid temperature test tube tion vegetable washing weight wood wool yield zinc
Δημοφιλή αποσπάσματα
Σελίδα 191 - In the dietary studies made in connection with the nutrition investigations of the Office of Experiment Stations of the United States Department of Agriculture...
Σελίδα 294 - Measures of Length 10 millimeters (mm) =1 centimeter cm 10 centimeters =1 decimeter dm 10 decimeters =1 meter m 10 meters =1 dekameter Dm 10 dekameters =1 hektometer Hm 10 hektometers =1 kilometer Km...
Σελίδα 295 - Measures of Weight 10 milligrams (mg) =1 centigram eg 10 centigrams =1 decigram dg 10 decigrams =1 gram g 10 grams =1 dekagram Dg 10 dekagrams =1 hektogram Hg 10 hektograms =1 kilogram Kg...
Σελίδα 26 - Kelvin has shown that if a drop of water were magnified to the size of the earth the molecules of water would be of a size intermediate between that of a cricket ball and of a marble.