Laboratory Manual: Arranged to Accompany "A Course in General Chemistry"Ginn, 1915 - 262 σελίδες |
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Σελίδα
... FLAMES , AND MEASUREMENT OF HEAT 91 XVII . BORON AND SILICON 95 XVIII . THE PHOSPHORUS FAMILY 97 XIX . GENERAL METHODS FOR PREPARATION OF COMPOUNDS 103 XX . THE ALKALI METALS 105 XXI . THE ALKALINE EARTH METALS . 109 XXII . THE ...
... FLAMES , AND MEASUREMENT OF HEAT 91 XVII . BORON AND SILICON 95 XVIII . THE PHOSPHORUS FAMILY 97 XIX . GENERAL METHODS FOR PREPARATION OF COMPOUNDS 103 XX . THE ALKALI METALS 105 XXI . THE ALKALINE EARTH METALS . 109 XXII . THE ...
Σελίδα 1
... flame . If the band is adjusted so as to close the openings , the flame becomes luminous . Always use the non- luminous flame unless otherwise directed . B FIG . 1 b . Hold an iron wire in various parts of the flame to gain an idea as ...
... flame . If the band is adjusted so as to close the openings , the flame becomes luminous . Always use the non- luminous flame unless otherwise directed . B FIG . 1 b . Hold an iron wire in various parts of the flame to gain an idea as ...
Σελίδα 2
... flame in the same way . c . From these experiments draw a diagram of the flame , indicating the hot and the cooler regions . 2. Heating a liquid in a test tube . Hold the test tube between the thumb and fingers ( Fig . 2 ) , constantly ...
... flame in the same way . c . From these experiments draw a diagram of the flame , indicating the hot and the cooler regions . 2. Heating a liquid in a test tube . Hold the test tube between the thumb and fingers ( Fig . 2 ) , constantly ...
Σελίδα 4
... flame , otherwise the beaker may be scratched and broken . ) The salt dissolves , forming a solution . Filter off the insoluble chalk , collecting the filtrate ( the clear liquid which passes through the filter paper ) in a beaker ( Fig ...
... flame , otherwise the beaker may be scratched and broken . ) The salt dissolves , forming a solution . Filter off the insoluble chalk , collecting the filtrate ( the clear liquid which passes through the filter paper ) in a beaker ( Fig ...
Σελίδα 7
... flame . This process is called fire - polishing . b . To bend glass tubing . Use the luminous Bunsen flame , spread out by means of the so - called " wing - top " burner ( Fig . 10 ) . Hold the tube lengthwise in the flame , gently ...
... flame . This process is called fire - polishing . b . To bend glass tubing . Use the luminous Bunsen flame , spread out by means of the so - called " wing - top " burner ( Fig . 10 ) . Hold the tube lengthwise in the flame , gently ...
Άλλες εκδόσεις - Προβολή όλων
Laboratory Manual: Arranged to Accompany a Course in General Chemistry William Edwards Henderson Wi McPherson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2019 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acetate add a little aluminium ammonia ammonium hydroxide ammonium sulfide antimony barium beaker boiling bottle bromide Bunsen flame burner calcium charcoal compounds cool copper sulfate cork crucible crystals delivery tube dish Dissolve distilled drops equal volume evaporate evaporating-dish evolved ferric filter paper filtrate flask gentle heat gently glass rod glass tube hood hydrochloric acid hydrogen chloride hydrogen sulfide insert iodide iron laboratory limewater liquid liter litmus paper magnesium manganese dioxide mercuric metal mixture nitric acid nitrogen Note the color note the result obtained oxide oxygen portion potassium chlorate powdered precipitate form Prepare reaction reagents Repeat the experiment residue rubber tube screw clamp shake shown in Fig side shelf silver nitrate small piece sodium carbonate sodium hydroxide sodium sulfate solu soluble solution of ammonium solution of sodium stopper sulfuric acid temperature test tube tion volume of hydrogen watch glass weight wire zinc
Δημοφιλή αποσπάσματα
Σελίδα 80 - Prove the presence of carbon dioxide in the air exhaled from the lungs by blowing through limewater (R). Hold a wide-mouthed bottle above a small flame so that the hot gaseous products of combustion will collect in it ; then quickly add a few cubic centimeters of limewater, cover the mouth of the bottle with the hand, and shake up the contents. What do the results prove? What are the sources of carbon dioxide in the air ? Does the percentage in the air increase ? Why ? e.
Σελίδα 70 - ... having drank a Flask of Florence at a Tavern, and thrown the empty Flask upon the Fire, he call'd for a Bason of Water to wash his Hands, and perceiving that the little Wine left in the Flask had filled up the Flask with Steam, he took the Flask by the Neck and plunged the Mouth of it under the Surface of the Water in the Bason, and the Water of the Bason was immediately driven up into the Flask by the Pressure of the Air.
Σελίδα 94 - Then add the precipitate together with about five times its weight of a mixture of equal parts of sodium carbonate and sulphur, and fuse over a Bunsen burner.
Σελίδα 60 - ... powdered brimstone in a test tube. Cover the mouth of the tube with the thumb and shake the contents gently until the sulfur is dissolved, adding more carbon disulfide if necessary. Pour the clear solution into a small beaker, cover it loosely with a filter paper, and set it aside in the hood.
Σελίδα 83 - Collect another test tube full of the gas, quickly pour into it about 1 cc. of bromine water, close the mouth of the tube with the thumb, and shake it vigorously.
Σελίδα 95 - 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.