A Laboratory Study of Household ChemistryAllyn and Bacon, 1921 - 173 σελίδες |
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Σελίδα
... liquid , throw the excess into the waste jars ; never pour it back into the bottle . 7. Never lay the stopper of a reagent bottle down on the shelf ; keep it in your hand and replace it when you are through . 8. Never taste reagents ...
... liquid , throw the excess into the waste jars ; never pour it back into the bottle . 7. Never lay the stopper of a reagent bottle down on the shelf ; keep it in your hand and replace it when you are through . 8. Never taste reagents ...
Σελίδα 2
... briefly explained before the students enter the laboratory . Also show how to heat a liquid in a test tube and how to use a ring stand . A. The Parts of the Burner . The Bunsen burner 2 PRELIMINARY EXPERIMENTS The Bunsen Burner.
... briefly explained before the students enter the laboratory . Also show how to heat a liquid in a test tube and how to use a ring stand . A. The Parts of the Burner . The Bunsen burner 2 PRELIMINARY EXPERIMENTS The Bunsen Burner.
Σελίδα 4
Mary Ethel Jones. neighbor . Apply the heat near the top of the liquid . Move the tube about in the hottest part of the flame , so that it may be uniformly heated . When the water boils , pour it into the sink and put the tube away . 2 ...
Mary Ethel Jones. neighbor . Apply the heat near the top of the liquid . Move the tube about in the hottest part of the flame , so that it may be uniformly heated . When the water boils , pour it into the sink and put the tube away . 2 ...
Σελίδα 11
... liquid will pass through it . To prepare a filter paper fold it once and then again at right angles to the straight ... liquid from the beaker into the funnel without spilling it hold the glass rod lightly against the rim of the beaker ...
... liquid will pass through it . To prepare a filter paper fold it once and then again at right angles to the straight ... liquid from the beaker into the funnel without spilling it hold the glass rod lightly against the rim of the beaker ...
Σελίδα 20
... liquid from a bottle . Never put the stopper on the table or shelf , and if too much liquid is taken , never return any to the bottle . Keep it in a labeled test tube for future use or throw it into the sink . Just touch the mouth of ...
... liquid from a bottle . Never put the stopper on the table or shelf , and if too much liquid is taken , never return any to the bottle . Keep it in a labeled test tube for future use or throw it into the sink . Just touch the mouth of ...
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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...