Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 5
... liquid in the test tube above the glucose solution for about half a minute . Then look through the film towards the light . The test is obtained more promptly if the test tube has been loosely covered for a few minutes . FIG . 8. - A ...
... liquid in the test tube above the glucose solution for about half a minute . Then look through the film towards the light . The test is obtained more promptly if the test tube has been loosely covered for a few minutes . FIG . 8. - A ...
Σελίδα 6
... liquid is called a precipitate . In this experiment the substance silver chloride is formed as a precipitate when salt ( sodium chloride ) and silver nitrate solutions are mixed . At the same time a substance , called sodium nitrate ...
... liquid is called a precipitate . In this experiment the substance silver chloride is formed as a precipitate when salt ( sodium chloride ) and silver nitrate solutions are mixed . At the same time a substance , called sodium nitrate ...
Σελίδα 9
... liquid , or gaseous ) , density ( weight of a given volume , " heaviness " ) , solubility in water or in other solvents , etc. In some instances it is difficult to decide whether a new substance has been formed or not . But in many ...
... liquid , or gaseous ) , density ( weight of a given volume , " heaviness " ) , solubility in water or in other solvents , etc. In some instances it is difficult to decide whether a new substance has been formed or not . But in many ...
Σελίδα 14
... liquid , mercury , and the colorless gas , oxygen ; and that water under the influence of an electric current decomposes into the two gases , hydrogen and oxygen . A great many sub- stances are decomposed by heating , and some of them ...
... liquid , mercury , and the colorless gas , oxygen ; and that water under the influence of an electric current decomposes into the two gases , hydrogen and oxygen . A great many sub- stances are decomposed by heating , and some of them ...
Σελίδα 19
... liquids , one of which , mercury , is familiar from its use in thermometers and barometers , while the other , bromine , is a disagreeable - smelling , red , fuming substance . Of the ... liquid , and solid are the three physical ELEMENTS 19.
... liquids , one of which , mercury , is familiar from its use in thermometers and barometers , while the other , bromine , is a disagreeable - smelling , red , fuming substance . Of the ... liquid , and solid are the three physical ELEMENTS 19.
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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.