Chemical Recreations: A Popular Compendium of Experimental Chemistry, for the Use of BeginnersRichard Griffin, 1847 - 566 Seiten |
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Chemical Recreations: A Popular Manual of Experimental Chemistry. Div. [Ii ... John Joseph Griffin Keine Leseprobe verfügbar - 2013 |
Häufige Begriffe und Wortgruppen
acid gas alcalies ammonia anhydrous antimony apparatus arsenic Atomic Measure atomic weight barium barytes blowpipe blue boiling bottle burns carbonate of potash carbonate of soda carbonic acid carbonic acid gas caustic potash charcoal chemical chlorate chloride chlorine gas cold water colour colourless combination combustion compound containing cool copper cork crystallised crystals cubic inches decomposed diluted disengaged dissolves distilled drops evaporation experiment exposed filled filter flame flask funnel gases glass tube grains heat hydrate hydrogen hydrogen gas ignited insoluble iron lime liquid liquor litmus Manganese melted mercury metallic mixed mixture muriatic acid nitrate nitrate of silver nitric acid oil of vitriol oxalic oxalic acid oxide oxygen gas phosphorus platinum porcelain potassium powder precipitate prepared produced protosalts Prussiate of Potash retort salt septems small quantity SO³ sodium specific gravity spirit lamp substance sulphate sulphuretted hydrogen sulphuric acid tion vapour vessel yellow zinc
Beliebte Passagen
Seite 134 - In all chemical investigations it has justly been considered an important object to ascertain the relative weights of the simples which constitute a compound. But unfortunately the inquiry has terminated here; whereas from the relative weights in the mass, the relative weights of the ultimate particles or atoms of the bodies might have been inferred, from which their number and weight in various other compounds would appear, in order to assist and to guide future investigations, and to correct their...
Seite 133 - ... the thought. But if we limit the subject, by taking a given volume of any gas, we seem persuaded that, let the divisions be ever so minute, the number of particles must be finite; just as in a given space of the universe, the number of stars and planets cannot be infinite.
Seite 133 - Chemical analysis and synthesis go no further than to the separation of particles one from another, and to their reunion. No new creation or destruction of matter is within the reach of chemical agency. We might as well attempt to introduce a new planet into the solar system, or to annihilate one already in existence, as to create or destroy a particle of hydrogen. All the changes we can produce consist in separating particles that are in a state of cohesion or combination, and joining those that...
Seite 133 - Chemical Synthesis. When any body exists in the elastic state, its ultimate particles are separated from each other to a much greater distance than in any other state; each particle occupies the centre of a comparatively large sphere, and supports its dignity by keeping all the rest, which by their gravity, or otherwise are disposed to encroach up it, at a respectful distance.
Seite 134 - Now it is one great object of this work, to show the importance and advantage of ascertaining the relative weights of the ultimate particles, both of simple and compound bodies, the number of simple elementary particles which constitute one compound particle, and the number of less compound particles which enter into the formation of one more compound particle.
Seite 530 - In some part of the glass it will become glowing, almost white-hot, and will continue so, as long as a sufficient quantity of vapour and of air remain in the glass. When the experiment on the slow combustion of ether is made in the dark, a pale phosphorescent light is perceived above the wire, which is of course most distinct when the wire ceases to be ignited.
Seite 269 - The immense mass of permanently elastic fluid which surrounds the globe we inhabit, must consist of a general assemblage of every kind of air which can be formed by the various bodies that compose its surface. Most of these, however, are absorbed by water ; a number of them are decomposed by combination with each other; and some of them are seldom disengaged in considerable quantities...
Seite 89 - In order to produce these effects, the salts employed must be fresh crystallized, and newly reduced to a very fine powder. The vessels in which the freezing mixture is made should be very thin, and just large enough to hold it, and the materials should be mixed together as quickly as possible.
Seite 60 - Red, by adding a Colourless one to it. To make the same Liquid alternately Red and Green by the addition of two Colourless Liquids. The methods of producing all these effects are detailed in Process h, on the Reactions of Acids and Alkalies with vegetable Colours, page 34. A Liquor which is Crimson at the bottom, Purple in the middle, and Green at the top. — Nearly fill a tall cylindrical glass with water, and colour it blue by adding a tablespoonful of tincture of cabbage — then make it green...
Seite 373 - ... where they are permitted to remain near a slow fire for half an hour or more, in proportion .to the thickness of the charcoal : they are then taken out, and when perfectly cool, are fit for use. By adding a small quantity of rosin to the wax, they may be made considerably harder; and on the contrary, should they be required softer, a little butter or tallow will answer the purpose.