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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Αποτελέσματα 1 - 5 από τα 27.
Σελίδα 1
... flasks included in your outfit . ( In reading off the amount of the liquid in a graduated tube , always read from the lower part of the meniscus ; that is , the curved surface of the liquid . ) c . Weight . Ask the assistant for ...
... flasks included in your outfit . ( In reading off the amount of the liquid in a graduated tube , always read from the lower part of the meniscus ; that is , the curved surface of the liquid . ) c . Weight . Ask the assistant for ...
Σελίδα 5
... flask is used . A and B represent soft glass tubes bent as shown in the figure . B is connected with the glass jet D by a piece of rubber tubing C. The glass jet D is made as follows : Heat a piece of soft glass tubing 12 or 15 cm . in ...
... flask is used . A and B represent soft glass tubes bent as shown in the figure . B is connected with the glass jet D by a piece of rubber tubing C. The glass jet D is made as follows : Heat a piece of soft glass tubing 12 or 15 cm . in ...
Σελίδα 26
... flask A , as represented in Fig . 26. The flask is set on a piece of wire gauze supported by the iron ring attached to the ring stand . The tube C is con- nected with water the pipe by means of rubber tubing , and a cur- rent of cold ...
... flask A , as represented in Fig . 26. The flask is set on a piece of wire gauze supported by the iron ring attached to the ring stand . The tube C is con- nected with water the pipe by means of rubber tubing , and a cur- rent of cold ...
Σελίδα 31
... flask or beaker , and place a thermometer in the liquid so that the temperature may be noted . Now heat the water at such a rate that the temperature rises slowly but steadily . At what temperature do you observe the formation of ...
... flask or beaker , and place a thermometer in the liquid so that the temperature may be noted . Now heat the water at such a rate that the temperature rises slowly but steadily . At what temperature do you observe the formation of ...
Σελίδα 33
... flask enough bone black to fill a test tube one - fourth full and pour over it about 50 cc . of water , to which has been added a few drops of a solution of litmus or indigo . Thoroughly mix the contents of the flask ; then heat gently ...
... flask enough bone black to fill a test tube one - fourth full and pour over it about 50 cc . of water , to which has been added a few drops of a solution of litmus or indigo . Thoroughly mix the contents of the flask ; then heat gently ...
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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.