A Laboratory Study of Household ChemistryAllyn and Bacon, 1921 - 173 σελίδες |
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Σελίδα
... clean and your desk neat . Good chemists are never slovenly . Do not put Do not put 5. Keep the sink in front of your desk clean . acids or strong bases in it without flushing it well . matches , fats , oils , paper , pieces of sodium ...
... clean and your desk neat . Good chemists are never slovenly . Do not put Do not put 5. Keep the sink in front of your desk clean . acids or strong bases in it without flushing it well . matches , fats , oils , paper , pieces of sodium ...
Σελίδα 4
... Clean up in this way after every experiment hereafter . Be sure to lock your drawer and locker . The instructor must sign your notes before you leave the laboratory . Bring these with you at the next recitation . EXPERIMENT 2 The Units ...
... Clean up in this way after every experiment hereafter . Be sure to lock your drawer and locker . The instructor must sign your notes before you leave the laboratory . Bring these with you at the next recitation . EXPERIMENT 2 The Units ...
Σελίδα 6
... Clean and lock your desk as usual . D. Problems . 1. A tank is 500 cm . long , 200 cm . wide , and 90 cm . deep . How many cubic centimeters of water will it hold ? 2. If one cubic centimeter of water weighs one gram , how many grams of ...
... Clean and lock your desk as usual . D. Problems . 1. A tank is 500 cm . long , 200 cm . wide , and 90 cm . deep . How many cubic centimeters of water will it hold ? 2. If one cubic centimeter of water weighs one gram , how many grams of ...
Σελίδα 8
... clean dry test tube and obtain about 10 grams of sugar from the distributing table . ( NOTE : Be careful not to spill material on the distributing table — if you do , clean it up . Hold the stopper of the bottle in your hand and re ...
... clean dry test tube and obtain about 10 grams of sugar from the distributing table . ( NOTE : Be careful not to spill material on the distributing table — if you do , clean it up . Hold the stopper of the bottle in your hand and re ...
Σελίδα 12
... clean , dry test tube . Mix the other part ( 4 grams ) on a piece of paper with 2 grams of manganese dioxide ( half as much ) , using the stirring rod . Then put it into a clean , dry test tube of the same size as the first . 3. Heat ...
... clean , dry test tube . Mix the other part ( 4 grams ) on a piece of paper with 2 grams of manganese dioxide ( half as much ) , using the stirring rod . Then put it into a clean , dry test tube of the same size as the first . 3. Heat ...
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A Laboratory Study of Household Chemistry (Classic Reprint) Mary Ethel Jones Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017 |
Συχνά εμφανιζόμενοι όροι και φράσεις
acetic add 5 cc albumen alcohol ammonium hydroxide APPARATUS baking powder beaker bleaching blue litmus Bunsen burner burn butter CALORIES carbon dioxide cellulose Chemical properties chemistry cold water color compounds concentrated sulfuric acid containing cool copper sulfate cotton cream crystals delivery tube dextrose dilute dissolve drop dry test tube equation to show evaporating dish Explain Fehling's solution ferment filtrate flask formed funnel gas bottles glass elbow glass plate grams Half fill heat hydrochloric acid instructor Instructor's Experiment iodine laboratory lactose limewater liquid litmus paper magnesium manganese dioxide MATERIALS milk mixture nitrogen Note the odor oxide oxygen phosphorus physical properties piece pneumatic trough potassium chlorate prepared proteins removed Result ring stand salt Small serving soap soda sodium carbonate sodium hydroxide soluble in water splint starch stirring rod stopper strip substance sucrose sulfuric acid taste temperature test tube thermometer wire word-and-symbol equation Write the equation Write the word-and-symbol
Δημοφιλή αποσπάσματα
Σελίδα 139 - 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 139 - 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 11 - ... the sulfur? Hold a magnet near a small portion of the mixture. Result? What kind of a change? (b) To a pinch of the mixture in a test tube add about five cubic centimeters of carbon disulfide (explosive near a flame), shake, and filter into an evaporating dish.
Σελίδα 137 - This method depends upon the fact that when a solution of soap is added to a solution of a calcium or magnesium salt an insoluble calcium or magnesium soap is produced.
Σελίδα 157 - EXERCISE— Continued WOMEN NOTE. With active exercise an increase of about 20 per cent total food units may be needed. Metabolism. — The process by which cells are nourished through the assimilation of food, while other cells are broken down to produce energy and heat, is called metabolism.
Σελίδα 21 - Withdraw the taper and then insert it again. Does the hydrogen burn? If so, where? Does the taper burn when in the bottle? When out of the bottle ? Feel of the neck of the bottle ; describe and explain. What...
Σελίδα 85 - Carbohydrates are organic compounds composed of carbon, hydrogen, and oxygen, the hydrogen and oxygen usually being in the same proportion as in water.
Σελίδα 117 - A violet coloration is produced at the junction of the two liquids.
Σελίδα 110 - Cork the mixture up ; let it stand in a warm place for two or three days.
Σελίδα 162 - CAKES, PASTRY, PUDDINGS, AND DESSERTS Cake, chocolate layer . Cake, gingerbread . . Cake, sponge . . . Custard, caramel . . Half ord. sq. pc. Half ord. sq. pc. Small piece...