Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 4
... removed from the flame . constantly . When it is quite soft , remove from flame , draw out to a small thread , and fuse off the thread in the flame , forming two small tubes closed at one end . Heat the closed end of each of these tubes ...
... removed from the flame . constantly . When it is quite soft , remove from flame , draw out to a small thread , and fuse off the thread in the flame , forming two small tubes closed at one end . Heat the closed end of each of these tubes ...
Σελίδα 42
... removal of the solid and liquid particles which con- stitute the cloud . In the purification processes some of the gaseous products also are eliminated- for instance , sul- phur compounds , the burning of which would yield products ...
... removal of the solid and liquid particles which con- stitute the cloud . In the purification processes some of the gaseous products also are eliminated- for instance , sul- phur compounds , the burning of which would yield products ...
Σελίδα 42
... Removing the oxygen from the air by burning phosphorus . Phosphorus under water . ( Dangerous ! Handle only with tongs . ) Support a crucible on a wire stand in a basin , glass trough , or sink containing water . Dry a small piece of ...
... Removing the oxygen from the air by burning phosphorus . Phosphorus under water . ( Dangerous ! Handle only with tongs . ) Support a crucible on a wire stand in a basin , glass trough , or sink containing water . Dry a small piece of ...
Σελίδα 49
... H2CO2 , is one of the substances which is decomposed in this way by sulphuric acid . If we examine the formula of formic acid , we see that the removal E of a molecule of water from a molecule of formic COMBUSTION 49.
... H2CO2 , is one of the substances which is decomposed in this way by sulphuric acid . If we examine the formula of formic acid , we see that the removal E of a molecule of water from a molecule of formic COMBUSTION 49.
Σελίδα 52
... removed to England early in the War of Independ- ence and later returned in command of British troops , which did not see ac- tive service . In 1783 he entered the service of the Elector of Bavaria , be- coming a minister of state . For ...
... removed to England early in the War of Independ- ence and later returned in command of British troops , which did not see ac- tive service . In 1783 he entered the service of the Elector of Bavaria , be- coming a minister of state . For ...
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.