Exercises in Chemistry: Systematically Arranged to Accompany the Second Revised Edition of "An Elementary Study of Chemistry"Ginn, 1919 - 147 σελίδες |
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Σελίδα 13
... strip of folded b . Preparation of oxygen from mercuric oxide . In the bottom of place about g . of mercuric oxide . ing the oxide near the end of a paper and introducing it carefully into the tube , as shown in Fig . 18. On inclining ...
... strip of folded b . Preparation of oxygen from mercuric oxide . In the bottom of place about g . of mercuric oxide . ing the oxide near the end of a paper and introducing it carefully into the tube , as shown in Fig . 18. On inclining ...
Σελίδα 38
... strip of gummed paper about the tube at the lower end of the stopper ; mark also , by a strip of paper placed at the level of the liquid in the tube , the vol- ume of the oxygen absorbed . Disconnect the tube and rinse it . Measure the ...
... strip of gummed paper about the tube at the lower end of the stopper ; mark also , by a strip of paper placed at the level of the liquid in the tube , the vol- ume of the oxygen absorbed . Disconnect the tube and rinse it . Measure the ...
Σελίδα 43
... strip of copper foil ; strips of colored calico ; piece of printed paper ( printer's ink ) ; paper written over with ordinary ink ; 1 g . potassium permanganate . PRECAUTION . All of the following experiments must be performed in the ...
... strip of copper foil ; strips of colored calico ; piece of printed paper ( printer's ink ) ; paper written over with ordinary ink ; 1 g . potassium permanganate . PRECAUTION . All of the following experiments must be performed in the ...
Σελίδα 44
... strips of colored calico in a bottle of the dry gas ; also two strips of paper , the one with writing in ink on it , the other with printing ( printer's ink ) on it . e . Repeat d , using similar strips , but moistened with water ...
... strips of colored calico in a bottle of the dry gas ; also two strips of paper , the one with writing in ink on it , the other with printing ( printer's ink ) on it . e . Repeat d , using similar strips , but moistened with water ...
Σελίδα 46
... strips of blue and of red litmus paper ; * 10 cc . solution of hydrogen chloride in benzene . a . Recall the properties of hydrochloric acid ( Exercise 26 ) . Prepare a dilute solution of each of the following acids by adding 1 or 2 ...
... strips of blue and of red litmus paper ; * 10 cc . solution of hydrogen chloride in benzene . a . Recall the properties of hydrochloric acid ( Exercise 26 ) . Prepare a dilute solution of each of the following acids by adding 1 or 2 ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
acetate alcohol ammonium hydroxide apparatus shown barium chloride beaker boiling bromide Bunsen flame calcium chloride carbon dioxide charcoal common salt compounds cool copper oxide copper sulfate cork crystals dish dissolved distilled water evaporate evaporating-dish EXERCISE experiment filter paper filtrate flask formed funnel tube glass plate glass rod glass tube hard-glass test tube hydrochloric acid insert iron laboratory limewater liquid litmus paper manganese dioxide Materials mixture mouth nitric acid Note the color Note the results odor phosphorus Place porcelain crucible potassium chlorate powdered precipitate PREPARATION AND PROPERTIES preparation of oxygen reaction red litmus paper remove residue ring stand rubber tubing screw clamp shake shown in Fig silver nitrate small beaker sodium carbonate sodium hydroxide sodium hydroxide solution solid soluble solution R. S. stand and burner starch stirring-rod stopper strips sulfuric acid temperature test tube volume watch glass weight wide-mouthed bottle wire wooden splint zinc
Δημοφιλή αποσπάσματα
Σελίδα 136 - 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 33 - Put one fourth of a test tube full of bone black into a small flask and pour over it about 50 cc. of water, to which has been added a few drops of a solution of litmus or of indigo.
Σελίδα 135 - 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 134 - Aluminium Antimony Arsenic Barium Bismuth Boron Bromine Cadmium Calcium Carbon Chlorine Chromium Cobalt Copper Fluorine Gold Hydrogen Iodine Iron Lead Lithium Magnesium Manganese Mercury Nickel Nitrogen Oxygen Phosphorus Platinum Potassium Silicon Silver Sodium Strontium Sulphur Tin Zinc Sym.
Σελίδα 83 - Phosphorous acid. Pour into a test tube about 0.5 cc. of phosphorus trichloride (hood) and add a little water, a drop at a time. What gas is evolved (R) ? Finally, add about 5 cc. of water, pour the liquid into an evaporatingdish, and evaporate to a sirupy mass. Dilute this with a little water, transfer the solution to a test tube, and add a few drops of a solution of silver nitrate. Boil the resulting mixture. A black precipitate forms. Explain.