A Popular ChemistryA.S. Barnes, 1887 - 327 σελίδες |
Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
acetic acid action alcohol ammonia ammonium aqua regia atomic weight becomes blue boiling borax bottle burning calcium called candle carbonate charcoal chemical Chemistry chloride CO₂ coal color colorless combustion common compounds contains copper cork crystals decomposed deflagrating dilute dissolved drop elements ether evaporated exposed fermentation fire flame flask formed Formula and molecular gases glass tube glycerin grams H₂O H₂SO heat HNO3 hydrogen ignited insoluble iron lamp light lime liquid melted metals mixed mixture molecular weight molecule NaCl NH4OH nitrate nitric nitric acid obtained odor organic oxalic acid oxide pass phosphorus plant poison potash potassium potassium carbonate potassium chlorate powder prepared produced Properties quantity salt silver silver nitrate soap soda sodium sodium carbonate soluble solution Specific Gravity starch substance sugar sulphate sulphide sulphuric acid temperature test-tube white precipitate yellow zinc
Δημοφιλή αποσπάσματα
Σελίδα 252 - Your worm is your only emperor for diet: we fat all creatures else to fat us, and we fat ourselves for maggots: your fat king and your lean beggar is but variable service; two dishes, but to one table: that's the end.
Σελίδα 183 - Thus the Seer, With vision clear, Sees forms appear and disappear, In the perpetual round of strange, Mysterious change From birth to death, from death to birth, From earth to heaven, from heaven to earth ; Till glimpses more sublime Of things, unseen before, Unto his wondering eyes reveal The Universe, as an immeasurable wheel Turning for evermore In the rapid and rushing river of Time.
Σελίδα 252 - Imperious Caesar, dead and turn'd to clay, Might stop a hole to keep the wind away : O, that that earth, which kept the world in awe, Should patch a wall to expel the winter's flaw ! But soft ! but soft ! aside : here comes the king.
Σελίδα 195 - ... or seeds of these living bodies, always float about in the air, and on dropping into the liquid begin to propagate themselves, and in the act of growing evolve the products of the fermentation. If the above liquids be left only in contact with air which has been passed through a red-hot platinum tube, and thus the living...
Σελίδα 150 - ... bridges span our rivers, Iron pens are used for writing, Iron ink our thoughts inditing, Iron stoves for cooking victuals, Iron ovens, pots, and kettles, Iron horses draw our loads, Iron rails compose our roads, Iron anchors hold in sands, Iron bolts and rods and bands, Iron houses, iron walls, Iron cannon, iron balls, Iron axes, knives, and chains, Iron augers, saws, and planes, Iron globules in our blood, Iron particles in food, Iron lightning-rods on spires, Iron telegraphic wires, Iron hammers,...
Σελίδα 155 - I can melt a piece of steel and cast it into an ingot, its composition should be the same throughout." He succeeded. His steel became famous, and Huntsman's ingots were in universal demand. He did not call them cast-steel. That was his secret. The process was wrapped in mystery by every means. The most faithful men were hired. The work was divided, large wages paid, and stringent oaths taken. One midwinter night, as the tall chimneys of the Attercliffe steelworks belched forth their smoke, a belated...
Σελίδα 230 - He shut himself up in his laboby cold or softened by heat, and admits of many uses to which common rubber would be entirely unsuited. If sulphurized rubber be heated to ' a high temperature it becomes a hard, brittle, black solid, capable of a high polish, which is used for knife-handles, combs, buttons, etc.
Σελίδα 251 - It was found that everything had passed into oblivion. The shape of the coffins could only be traced by a black line of carbonaceous matter. The rusted hinges and nails, and a round wooden knot, alone remained in one grave ; while a sinr le lock of braided hair was found in the other.
Σελίδα 21 - This action of 0, so destructive — wasting us away constantly from birth to death, is yet essential to our existence. Why is this ? Here is the glorious paradox of life. We live only as we die. The moment we cease dying, we cease living. All our life is produced by the destruction of our bodies. No act can be performed except by the wearing away of a muscle. No thought can be evolved except at the expense of the brain. Hence the necessity for food to supply the constant wabte of the system,* and...
Σελίδα 49 - Most sanitary authorities are of the opinion that " water of moderate hardness is preferable to a very soft water " for domestic uses. The proportion said to be most desirable is given as about 6 grains of carbonate of lime to the gallon. The French authorities are so well satisfied of the superiority of hard water, that they pass by that of the sandy plains, near Paris, and go far away to the chalk hills of Champagne, where they find water even harder than that of London ; giving as a reason for...