Laboratory exercises arranged to accompany "First course in chemistry"Ginn, 1915 - 128 σελίδες |
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Αποτελέσματα 1 - 5 από τα 51.
Σελίδα 5
... gently tapping the paper , the oxide will be deposited in the bottom of the tube . The paper is then withdrawn ... gentle heat to the oxide . The tube must be rotated constantly to distribute the heat . If the upper part of the ( Fig . 6 ) ...
... gently tapping the paper , the oxide will be deposited in the bottom of the tube . The paper is then withdrawn ... gentle heat to the oxide . The tube must be rotated constantly to distribute the heat . If the upper part of the ( Fig . 6 ) ...
Σελίδα 6
... gently at first . Highly heated glass must be cooled slowly ; otherwise it is easily broken . Cut from one of the lengths of soft - glass tubing a piece about 15 cm . in length . To do this , place the tubing on the B desk and draw the ...
... gently at first . Highly heated glass must be cooled slowly ; otherwise it is easily broken . Cut from one of the lengths of soft - glass tubing a piece about 15 cm . in length . To do this , place the tubing on the B desk and draw the ...
Σελίδα 7
... gently pull the glass apart , at the same time exerting a slight pressure with the thumbs . If the tube does not yield readily to a gentle pressure , a deeper scratch must be made . In the case of large tubing it may be found necessary ...
... gently pull the glass apart , at the same time exerting a slight pressure with the thumbs . If the tube does not yield readily to a gentle pressure , a deeper scratch must be made . In the case of large tubing it may be found necessary ...
Σελίδα 8
... gentle , screwlike motion . If the hole is too small to A B FIG . 11 FIG . 12 admit the tube when a gentle pressure is applied , it may be slightly enlarged with a round file . Now put the cork in the test tube and set the apparatus ...
... gentle , screwlike motion . If the hole is too small to A B FIG . 11 FIG . 12 admit the tube when a gentle pressure is applied , it may be slightly enlarged with a round file . Now put the cork in the test tube and set the apparatus ...
Σελίδα 9
... gently through the other end . Before the bottle , so filled , is removed from the trough , cover its mouth tightly with a glass plate . The bottle so covered may then be placed on the desk either right side up or in an inverted ...
... gently through the other end . Before the bottle , so filled , is removed from the trough , cover its mouth tightly with a glass plate . The bottle so covered may then be placed on the desk either right side up or in an inverted ...
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Συχνά εμφανιζόμενοι όροι και φράσεις
acetate alcohol aluminium sulfate ammonium hydroxide ammonium sulfide barium chloride beaker blowpipe boiling bromide carbon dioxide Chemistry cloth common salt COMPOUNDS Apparatus cool copper sulfate cork crystals dilute dish dissolved distilled dyes evaporate evaporating-dish evolved EXERCISE experiment ferric ferrous filter paper filtrate flask glass rod glass tube hard-glass test tube hydrochloric acid iodide laboratory period limewater liquid litmus paper magnesium manganese dioxide Materials mercuric metal milk mixture mouth nitric acid Note the color Note the result odor OPTIONAL Place porcelain crucible potassium chlorate powdered precipitate PREPARATION AND PROPERTIES preparation of oxygen reaction red litmus paper residue ring stand rubber tubing shown in Fig silver nitrate small beaker sodium carbonate sodium chloride sodium hydroxide sodium hydroxide solution solid soluble solution of sodium solution R. S. stand and burner starch stirring stirring-rod strips sulfuric acid temperature test tube watch glass wide-mouthed bottle wire zinc
Δημοφιλή αποσπάσματα
Σελίδα 114 - 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 115 - 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 115 - The gram is practically the only unit used by the chemist. Thus, the weight of a crucible is given as (say) 10.532 g. and not 10,532 mg. or 10 g. 5 dg. 3 eg. 2 mg. Note that 1 pound troy = 5760 grains = 373.24 grams 1 pound avoirdupois = 7000 grains = 453.59 grams 1...
Σελίδα 56 - 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 40 - Pour the clear solution into an evaporating-dish, cover it loosely with a filter paper, and set it aside in the hood. The carbon disulfide soon evaporates, the sulfur being deposited in crystals. Examine these with a magnifying-glass.
Σελίδα 113 - 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 128 - Moore : Logarithmic Reduction Tables Morse : Exercises in Quantitative Chemistry .Nichols : Laboratory Manual of Household Chemistry Olsen: Pure Foods: their Adulteration, Nutritive Value, and Cost Sellers: Treatise on Qualitative Analysis (Rev. Ed.) Test and McLaughlin : Notes on Qualitative Analysis Unger: Review Questions and Problems in Chemistry Williams: Chemical Exercises Williams : Essentials of Chemistry . ._.
Σελίδα 128 - Miller: Laboratory Physics Millikan : Mechanics, Molecular Physics, and Heat Millikan and Gale: First Course in Physics (Rev. Ed.) Millikan, Gale, and Bishop : First Course in Laboratory Physics Millikan...