A Laboratory Study of Household ChemistryAllyn and Bacon, 1921 - 173 σελίδες |
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Αποτελέσματα 6 - 10 από τα 32.
Σελίδα 16
... splint into a bottle of oxygen . Re- move it , blow out the flame , and thrust it in again . Do this as many times as you can . After a while the stick will not burst into flame . Why ? Does oxygen burn ? Does it support combustion ...
... splint into a bottle of oxygen . Re- move it , blow out the flame , and thrust it in again . Do this as many times as you can . After a while the stick will not burst into flame . Why ? Does oxygen burn ? Does it support combustion ...
Σελίδα 18
... splint . Raise the temperature of all by slowly heating with the burner turned low . Stand back and observe the order in which the substances take fire and burn . 2. Explain what takes place when a substance burns in the air . 3. What ...
... splint . Raise the temperature of all by slowly heating with the burner turned low . Stand back and observe the order in which the substances take fire and burn . 2. Explain what takes place when a substance burns in the air . 3. What ...
Σελίδα 19
... splint , dilute sulfuric acid . APPARATUS . A 250 - cc . Florence flask , two - holed stopper , short elbow , delivery tube , pneumatic trough , four gas bottles , beaker , two test tubes , and a safety tube . A. The Usual Method of ...
... splint , dilute sulfuric acid . APPARATUS . A 250 - cc . Florence flask , two - holed stopper , short elbow , delivery tube , pneumatic trough , four gas bottles , beaker , two test tubes , and a safety tube . A. The Usual Method of ...
Σελίδα 21
... splint into the bottle . Withdraw the splint and insert it again . Does the hydrogen burn ? If so , where ? Does the splint burn when in the bottle ? when out of the bottle ? Does hydrogen support combustion ? Feel the neck of the ...
... splint into the bottle . Withdraw the splint and insert it again . Does the hydrogen burn ? If so , where ? Does the splint burn when in the bottle ? when out of the bottle ? Does hydrogen support combustion ? Feel the neck of the ...
Σελίδα 23
... splint over the tube containing the smaller quantity of gas . What is the gas that collects at the positive electrode ( anode ) ? Open the other stop - cock to force out the water in the glass tip , then hold a lighted match at the end ...
... splint over the tube containing the smaller quantity of gas . What is the gas that collects at the positive electrode ( anode ) ? Open the other stop - cock to force out the water in the glass tip , then hold a lighted match at the end ...
Άλλες εκδόσεις - Προβολή όλων
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...