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
... filter paper ? Finally , estimate the lengths of various objects , as a pencil , a test tube ; then measure . Continue until you can approximate the lengths of small objects . b . Volume . By means of a graduated test tube or cylin- der ...
... filter paper ? Finally , estimate the lengths of various objects , as a pencil , a test tube ; then measure . Continue until you can approximate the lengths of small objects . b . Volume . By means of a graduated test tube or cylin- der ...
Σελίδα 6
... Filter paper ; 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 ...
... Filter paper ; 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 ...
Σελίδα 8
... filter paper , which allows the liquid to run through but retains the solid . To prepare the filter paper , fold it along a diameter into halves , then at right angles to the first fold into quarters . The folded filter is then opened ...
... filter paper , which allows the liquid to run through but retains the solid . To prepare the filter paper , fold it along a diameter into halves , then at right angles to the first fold into quarters . The folded filter is then opened ...
Σελίδα 9
... Filter off the insoluble chalk , collecting the 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 ...
... Filter off the insoluble chalk , collecting the 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 ...
Σελίδα 12
... filter off any undissolved zinc and evaporate the solution to dryness ( hood ) as in d . How does the change differ ... paper ) 2 g . of sulfur and 2 g . of powdered iron and make a careful list of their properties . Try the effect of a ...
... filter off any undissolved zinc and evaporate the solution to dryness ( hood ) as in d . How does the change differ ... paper ) 2 g . of sulfur and 2 g . of powdered iron and make a careful list of their properties . Try the effect of a ...
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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.