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A Laboratory Study of Household Chemistry (Classic Reprint)
Mary Ethel Jones
Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2017
action alcohol ammonium APPARATUS Appendix baking base beaker blue body boiling bottle Bunsen burner butter called carbon dioxide carbon tetrachloride cent chemical chemistry chloride clean cold water color compounds concentrated sulfuric acid containing cool cotton cover cream crystals delivery tube dilute dissolve drop evaporating dish EXPERIMENT Explain Fehling's solution filter flame flask FOOD formed fruits give glass glucose grams half heat hold hydrochloric acid hydrogen iodine laboratory light liquid litmus MATERIALS method milk minutes mixture mouth nitrogen Note Obtain odor organic oxide oxygen piece portion potassium powder precipitate prepared presence produced proteins pure reaction Remove rennin Repeat Result salt serving Shake soap sodium sodium carbonate solid soluble solution splint stain stand starch stirring stopper strip substance sugar sulfate takes taste temperature test tube UNITS warm Wash weight Write the equation
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 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.