Exercises in Chemistry: Systematically Arranged to Accompany the Second Revised Edition of "An Elementary Study of Chemistry"Ginn, 1919 - 147 σελίδες |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 37.
Σελίδα 10
... minutes remove the bottle quickly and pour into it 5 cc . of clear limewater . Place the palm of the hand tightly over the mouth of the bottle and shake the contents . Note any change in the appearance of the limewater . FIG . 17 Clean ...
... minutes remove the bottle quickly and pour into it 5 cc . of clear limewater . Place the palm of the hand tightly over the mouth of the bottle and shake the contents . Note any change in the appearance of the limewater . FIG . 17 Clean ...
Σελίδα 12
... minutes ; then cool the tube , remove the substance ( it may be necessary to break the tube to do so ) , and examine the product with a magnifying glass . Can you now distinguish between the iron and the sulfur ? Try the effect of the ...
... minutes ; then cool the tube , remove the substance ( it may be necessary to break the tube to do so ) , and examine the product with a magnifying glass . Can you now distinguish between the iron and the sulfur ? Try the effect of the ...
Σελίδα 17
... minutes , filter off the solid matter ( what is it ? ) , repeating the filtration , if necessary , in order to obtain a perfectly clear filtrate . Evaporate about one third of the liquid , and set it aside until crystals are deposited ...
... minutes , filter off the solid matter ( what is it ? ) , repeating the filtration , if necessary , in order to obtain a perfectly clear filtrate . Evaporate about one third of the liquid , and set it aside until crystals are deposited ...
Σελίδα 20
... minute , test for the presence of hydrogen with a lighted splint . Repeat , holding the bottle mouth downward . Describe the results . Is the gas heavier or lighter than air ? * 4 . Without removing the fragments of undissolved zinc ...
... minute , test for the presence of hydrogen with a lighted splint . Repeat , holding the bottle mouth downward . Describe the results . Is the gas heavier or lighter than air ? * 4 . Without removing the fragments of undissolved zinc ...
Σελίδα 33
... minutes , and filter . If the filtrate is not decolorized , repeat the process , using more bone black . What is the composition of bone black ? By what other name is it known ? What use does this experiment suggest for it ? d . Is ...
... minutes , and filter . If the filtrate is not decolorized , repeat the process , using more bone black . What is the composition of bone black ? By what other name is it known ? What use does this experiment suggest for it ? d . Is ...
Άλλες εκδόσεις - Προβολή όλων
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.