Elementary Household Chemistry: An Introductory Textbook for Students of Home EconomicsMacmillan, 1914 - 307 σελίδες |
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Σελίδα 5
... sugar ( " glucose or 2.5 grams . " " FIG . 6. Glass tube closed at one end . The " dextrose " ) , Rub Dissolve 2.5 grams glucose in 20 cc . water . FIG . 9.1 Glass loop 4 for limewater films . This can be made from a piece of small ( 2 ...
... sugar ( " glucose or 2.5 grams . " " FIG . 6. Glass tube closed at one end . The " dextrose " ) , Rub Dissolve 2.5 grams glucose in 20 cc . water . FIG . 9.1 Glass loop 4 for limewater films . This can be made from a piece of small ( 2 ...
Σελίδα 12
... sugar ( about 0.5 gram ) in a test tube . Note what escapes from the tube and what is left in it . Test the escaping gas with blue lit- mus paper . How many substances were put into the tube ? Were new sub- stances formed ? How many ...
... sugar ( about 0.5 gram ) in a test tube . Note what escapes from the tube and what is left in it . Test the escaping gas with blue lit- mus paper . How many substances were put into the tube ? Were new sub- stances formed ? How many ...
Σελίδα 14
... sugar in Experiment 15 , give a large number of de- composition products . A great many also are decomposed by the electric current , and a special name , electrolysis , is applied to decomposition so effected . The decomposition ...
... sugar in Experiment 15 , give a large number of de- composition products . A great many also are decomposed by the electric current , and a special name , electrolysis , is applied to decomposition so effected . The decomposition ...
Σελίδα 17
... sugar ( see Expt . 15 ) , may , as we have seen in Experiment 16 , be itself decomposed into hydrogen and oxygen . In Experi- ment 14 one of the products obtained in the decomposition of potassium chlorate is potassium chloride , a ...
... sugar ( see Expt . 15 ) , may , as we have seen in Experiment 16 , be itself decomposed into hydrogen and oxygen . In Experi- ment 14 one of the products obtained in the decomposition of potassium chlorate is potassium chloride , a ...
Σελίδα 22
... sugar is a compound of carbon with hydrogen and oxygen .黛 A compound is to be clearly distinguished from a mixture . Sulphur and iron can be mixed by grinding the two together in a mortar . In the mixture each of the two elements ...
... sugar is a compound of carbon with hydrogen and oxygen .黛 A compound is to be clearly distinguished from a mixture . Sulphur and iron can be mixed by grinding the two together in a mortar . In the mixture each of the two elements ...
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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.