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 10
... cold , dry , wide - mouthed bottle over a candle flame , as shown in Fig . 17. Note the film of mois- ture collecting on the bottle . After one or two minutes remove the bottle quickly and pour into it 5 cc . of clear limewater . Place ...
... cold , dry , wide - mouthed bottle over a candle flame , as shown in Fig . 17. Note the film of mois- ture collecting on the bottle . After one or two minutes remove the bottle quickly and pour into it 5 cc . of clear limewater . Place ...
Σελίδα 21
... cold , dry beaker or bottle and note the liquid depos- ited on the sides of the vessel . Explain . FIG . 22 B D b . Examine the structure of the oxyhydrogen blowpipe . Draw a diagram representing a cross section of it . Compare it with ...
... cold , dry beaker or bottle and note the liquid depos- ited on the sides of the vessel . Explain . FIG . 22 B D b . Examine the structure of the oxyhydrogen blowpipe . Draw a diagram representing a cross section of it . Compare it with ...
Σελίδα 22
... cold portions of the tube . Is there any invisible evidence of change in the copper oxide ? Explain . What is the object of the calcium chloride in tube B ? b . Disconnect the bottle A at E from the rest of the ap- paratus and force a ...
... cold portions of the tube . Is there any invisible evidence of change in the copper oxide ? Explain . What is the object of the calcium chloride in tube B ? b . Disconnect the bottle A at E from the rest of the ap- paratus and force a ...
Σελίδα 26
... cold water is conducted through FIG . 26 the outer tube of the condenser , escaping through the tube D. ( Why is cold water forced in at C rather than at D ? ) Fill the flask one - fourth full of hydrant or well water and boil until 50 ...
... cold water is conducted through FIG . 26 the outer tube of the condenser , escaping through the tube D. ( Why is cold water forced in at C rather than at D ? ) Fill the flask one - fourth full of hydrant or well water and boil until 50 ...
Σελίδα 33
... cold porcelain dish into a small luminous Bun- sen flame . Note the deposit . What is this form of carbon called ? In what other forms does carbon exist ? c . Put into a small flask enough bone black to fill a test tube one - fourth ...
... cold porcelain dish into a small luminous Bun- sen flame . Note the deposit . What is this form of carbon called ? In what other forms does carbon exist ? c . Put into a small flask enough bone black to fill a test tube one - fourth ...
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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.