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 9
... filtrate , that is , the clear liquid which passes through the filter paper , in a beaker ( Fig . 14 ) . The salt may be recovered from the filtrate by the process of evaporation . To perform this operation , pour the filtrate into an ...
... filtrate , that is , the clear liquid which passes through the filter paper , in a beaker ( Fig . 14 ) . The salt may be recovered from the filtrate by the process of evaporation . To perform this operation , pour the filtrate into an ...
Σελίδα 17
... filtrate . Evaporate about one third of the liquid , and set it aside until crystals are deposited . Convince yourself that the substance is dif- ferent from the potassium chlorate with which you started . What is the compound ( p . 26 ...
... filtrate . Evaporate about one third of the liquid , and set it aside until crystals are deposited . Convince yourself that the substance is dif- ferent from the potassium chlorate with which you started . What is the compound ( p . 26 ...
Σελίδα 20
... filtrate compare in properties with the original zinc ? What is the product ( p . 41 of text ) ? How does it differ in com- position from sulfuric acid ? EXERCISE 9 THE COMBUSTION OF HYDROGEN ; THE OXY- HYDROGEN BLOWPIPE Apparatus ...
... filtrate compare in properties with the original zinc ? What is the product ( p . 41 of text ) ? How does it differ in com- position from sulfuric acid ? EXERCISE 9 THE COMBUSTION OF HYDROGEN ; THE OXY- HYDROGEN BLOWPIPE Apparatus ...
Σελίδα 33
... filtrate is not decolorized , repeat the process , using more bone black . What is the composition of bone black ? By what other name is it known ? What use does this experiment suggest for it ? d . Is carbon an active element at ...
... filtrate is not decolorized , repeat the process , using more bone black . What is the composition of bone black ? By what other name is it known ? What use does this experiment suggest for it ? d . Is carbon an active element at ...
Σελίδα 39
... filtrate on a watch glass . Set the glass on a small beaker half full of boiling water ( Fig . 33 ) until the liquid is evaporated ( ? ) . c . Place exactly 3 g . of common salt in one test tube and an equal weight of potassium nitrate ...
... filtrate on a watch glass . Set the glass on a small beaker half full of boiling water ( Fig . 33 ) until the liquid is evaporated ( ? ) . c . Place exactly 3 g . of common salt in one test tube and an equal weight of potassium nitrate ...
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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.