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 1
... piece . a . Length . By means of the scale ( see Appendix ) , measure the length ( in centimeters ) of various pieces of apparatus included in your outfit , as a test tube , file , and blowpipe . What is the diameter of your filter ...
... piece . a . Length . By means of the scale ( see Appendix ) , measure the length ( in centimeters ) of various pieces of apparatus included in your outfit , as a test tube , file , and blowpipe . What is the diameter of your filter ...
Σελίδα 3
... piece of white cardboard , about 10 cm . square , vertically through the center of the flame , the lower end of the cardboard resting against the top of the burner . Remove the cardboard before it is ignited and from the scorched ...
... piece of white cardboard , about 10 cm . square , vertically through the center of the flame , the lower end of the cardboard resting against the top of the burner . Remove the cardboard before it is ignited and from the scorched ...
Σελίδα 5
... 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 length in the Bunsen flame until the walls of A B FIG . 8 the heated portion thicken and the size of the bore dimin- ishes ...
... 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 length in the Bunsen flame until the walls of A B FIG . 8 the heated portion thicken and the size of the bore dimin- ishes ...
Σελίδα 6
... piece of chalk ; 2 or 3 g . of common salt . a . Heating liquids in test tubes . Half fill a test tube with water and apply heat until the water boils rapidly . To do this , hold the test tube between the thumb and fingers O FIG . 9 FIG ...
... piece of chalk ; 2 or 3 g . of common salt . a . Heating liquids in test tubes . Half fill a test tube with water and apply heat until the water boils rapidly . To do this , hold the test tube between the thumb and fingers O FIG . 9 FIG ...
Σελίδα 8
... piece of chalk to a powder in a mortar , and mix the product intimately with about an equal bulk of common salt . Place the mixture in a small beaker , add about 50 cc . of distilled water , and stir with a glass rod . ( The ends of the ...
... piece of chalk to a powder in a mortar , and mix the product intimately with about an equal bulk of common salt . Place the mixture in a small beaker , add about 50 cc . of distilled water , and stir with a glass rod . ( The ends of the ...
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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.