Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 11
... .- A test tube holder . but also a portion of each may be dissolved separately in water and treated with silver nitrate solution . In the main experiment how many substances were put into II DECOMPOSITION AND COMBINATION II.
... .- A test tube holder . but also a portion of each may be dissolved separately in water and treated with silver nitrate solution . In the main experiment how many substances were put into II DECOMPOSITION AND COMBINATION II.
Σελίδα 23
... portions . Place one portion in a test tube and heat to redness . Do you observe any evidence of chemical action ? Allow the test tube to cool , break it , and examine the contents . Grind these and compare with the unheated portion ...
... portions . Place one portion in a test tube and heat to redness . Do you observe any evidence of chemical action ? Allow the test tube to cool , break it , and examine the contents . Grind these and compare with the unheated portion ...
Σελίδα 36
... portions . To one portion of each add enough litmus solution to color it distinctly . Observe the color the litmus takes in the two liquids . Put the colored bicarbonate solution into a beaker or dish and gradually pour the colored ...
... portions . To one portion of each add enough litmus solution to color it distinctly . Observe the color the litmus takes in the two liquids . Put the colored bicarbonate solution into a beaker or dish and gradually pour the colored ...
Σελίδα 37
... portion of bitartrate solution little by little , until the color does change . Then add the un- colored portion of bicarbonate solution , and finally the remainder of the bitartrate solution . If necessary , dissolve a little more ...
... portion of bitartrate solution little by little , until the color does change . Then add the un- colored portion of bicarbonate solution , and finally the remainder of the bitartrate solution . If necessary , dissolve a little more ...
Σελίδα 42
... portions , marking the level of each fifth with a label . Cover the full bottle tightly with a glass plate , and invert it into a trough of water . Deliver oxygen into the bottle until one - fifth of the water is displaced . Displace ...
... portions , marking the level of each fifth with a label . Cover the full bottle tightly with a glass plate , and invert it into a trough of water . Deliver oxygen into the bottle until one - fifth of the water is displaced . Displace ...
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.