Laboratory exercises arranged to accompany "First course in chemistry"Ginn, 1915 - 128 σελίδες |
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Σελίδα 3
... ring stand ; pipe- stem triangle to support the crucible while being heated ; pneumatic trough ( or dish ) ; wide - mouthed bottle or large beaker ; candle . Materials . 2 or 3 g . powdered iron ; 2 or 3 g . granulated tin ; pellet of ...
... ring stand ; pipe- stem triangle to support the crucible while being heated ; pneumatic trough ( or dish ) ; wide - mouthed bottle or large beaker ; candle . Materials . 2 or 3 g . powdered iron ; 2 or 3 g . granulated tin ; pellet of ...
Σελίδα 10
... ring stand and burner ; deflagrating - spoon . Materials . 6 g . potassium chlorate ; 3 g . manganese dioxide ; wooden splints ; bit of sulfur ; picture - frame wire 20 cm . long ; bit of cotton . a . Usual laboratory method for ...
... ring stand and burner ; deflagrating - spoon . Materials . 6 g . potassium chlorate ; 3 g . manganese dioxide ; wooden splints ; bit of sulfur ; picture - frame wire 20 cm . long ; bit of cotton . a . Usual laboratory method for ...
Σελίδα 12
... ring stand ; evaporating - dish ; burner . Materials . Substances left in the preparation of oxygen ( Exercise 6 ) . a . Pouring liquids from one vessel to another . In doing this care must be taken to prevent the liquid from running ...
... ring stand ; evaporating - dish ; burner . Materials . Substances left in the preparation of oxygen ( Exercise 6 ) . a . Pouring liquids from one vessel to another . In doing this care must be taken to prevent the liquid from running ...
Σελίδα 14
... ring stand ; evaporating - dish ; burner . Materials . Substances left in the preparation of oxygen ( Exercise 6 ) . a . Pouring liquids from one vessel to another . In doing this care must be taken to prevent the liquid from running ...
... ring stand ; evaporating - dish ; burner . Materials . Substances left in the preparation of oxygen ( Exercise 6 ) . a . Pouring liquids from one vessel to another . In doing this care must be taken to prevent the liquid from running ...
Σελίδα 14
... ring stand ( Fig . 17 ) , and heat gently . The liquid may be made to simmer , but should not actually boil ( ? ) . With- draw the heat as soon as the water is evaporated . Note the residue left . Convince yourself that it is different ...
... ring stand ( Fig . 17 ) , and heat gently . The liquid may be made to simmer , but should not actually boil ( ? ) . With- draw the heat as soon as the water is evaporated . Note the residue left . Convince yourself that it is different ...
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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...