Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 47
... lumps . Potassium hydroxide , 30 per cent solution . Pass a slow current of carbon dioxide into a train of apparatus comprising ( 1 ) a Woulff bottle containing concentrated sulphuric acid , ( 2 ) an iron tube packed with COMBUSTION 47.
... lumps . Potassium hydroxide , 30 per cent solution . Pass a slow current of carbon dioxide into a train of apparatus comprising ( 1 ) a Woulff bottle containing concentrated sulphuric acid , ( 2 ) an iron tube packed with COMBUSTION 47.
Σελίδα 49
... concentrated sulphuric acid . In Experiment 32 con- centrated sulphuric acid was used to dry the carbon dioxide , i.e. to take up the water vapor mixed with the gas . Now , concentrated sulphuric acid not only takes up free water ...
... concentrated sulphuric acid . In Experiment 32 con- centrated sulphuric acid was used to dry the carbon dioxide , i.e. to take up the water vapor mixed with the gas . Now , concentrated sulphuric acid not only takes up free water ...
Σελίδα 50
... acid or sodium formate solution to drop slowly upon the concentrated sulphuric acid , and collect the gas by dis- placement of water . CHAPTER X THE RELATION OF COMBUSTION TO HEAT HEAT is. 50 ELEMENTARY HOUSEHOLD CHEMISTRY.
... acid or sodium formate solution to drop slowly upon the concentrated sulphuric acid , and collect the gas by dis- placement of water . CHAPTER X THE RELATION OF COMBUSTION TO HEAT HEAT is. 50 ELEMENTARY HOUSEHOLD CHEMISTRY.
Σελίδα 74
... concentrated hydrochloric acid until they do not color the flame . Heat a clean platinum wire and dip it while hot into one of the salts , then bring again into the Bunsen flame and note the color imparted to it . Repeat with the other ...
... concentrated hydrochloric acid until they do not color the flame . Heat a clean platinum wire and dip it while hot into one of the salts , then bring again into the Bunsen flame and note the color imparted to it . Repeat with the other ...
Σελίδα 82
... concentrated sulphuric acid . ( 2 ) One or two drops concentrated hydrochloric acid . ( 3 ) Five to ten drops reagent acetic acid . ( 4 ) A few crystals tartaric acid . ( 5 ) A few crystals citric acid . ( 6 ) Nothing . 2. Shake each ...
... concentrated sulphuric acid . ( 2 ) One or two drops concentrated hydrochloric acid . ( 3 ) Five to ten drops reagent acetic acid . ( 4 ) A few crystals tartaric acid . ( 5 ) A few crystals citric acid . ( 6 ) Nothing . 2. Shake each ...
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.