Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 13
... mixture of sulphuric acid and water . eeeeee FIG . 18. - Hofmann's apparatus for the elec- trolysis of water . If the hydrogen and oxygen produced in the electrolysis of water are both collected and mixed and set on fire , an explosion ...
... mixture of sulphuric acid and water . eeeeee FIG . 18. - Hofmann's apparatus for the elec- trolysis of water . If the hydrogen and oxygen produced in the electrolysis of water are both collected and mixed and set on fire , an explosion ...
Σελίδα 15
... mixture on fire . We are therefore justified in regarding the more complex substances as com- pounds of the simpler ... mixtures of a number of different substances . And very commonly substances outside of the organisms , particularly ...
... mixture on fire . We are therefore justified in regarding the more complex substances as com- pounds of the simpler ... mixtures of a number of different substances . And very commonly substances outside of the organisms , particularly ...
Σελίδα 22
... mixture . Sulphur and iron can be mixed by grinding the two together in a mortar . In the mixture each of the two elements retains its individual characteristics . The iron is still attracted by a magnet . Carbon disulphide dissolves ...
... mixture . Sulphur and iron can be mixed by grinding the two together in a mortar . In the mixture each of the two elements retains its individual characteristics . The iron is still attracted by a magnet . Carbon disulphide dissolves ...
Σελίδα 23
... mixture into two portions . Place one portion in a test tube and heat to redness . Do you observe any evidence of ... mixture of iron and sulphur and the compound prepared in this ex- periment are not sufficiently marked ( as may happen ...
... mixture into two portions . Place one portion in a test tube and heat to redness . Do you observe any evidence of ... mixture of iron and sulphur and the compound prepared in this ex- periment are not sufficiently marked ( as may happen ...
Σελίδα 24
An Introductory Textbook for Students of Home Economics John Ferguson Snell. Air is a mixture of the two gases , nitrogen and oxygen . A similar mixture can be made of hydrogen and oxygen . This latter mixture is , of course , not air ...
An Introductory Textbook for Students of Home Economics John Ferguson Snell. Air is a mixture of the two gases , nitrogen and oxygen . A similar mixture can be made of hydrogen and oxygen . This latter mixture is , of course , not air ...
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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.