Manipulations
Elutriation
In chemistry, the operation of washing insoluble powders with water, to separate them from foreign matter, fine powder it still holds in…
Evaporation
The conversion of a fluid into vapor by means of heat, diminished atmospheric pressure, or exposure to a dry atmosphere. The process of…
Fermentation
Chemists distinguish fermentation into tive kinds, viz: The saccharine fermentation, by which starch and gum are converted into sugar.
Filtration
The word filtration is absolutely synonymous with straining; but, in the language of the laboratory, the former is usually applied to the…
Granulation
The reduction of This is done by pouring them, in the melted state, into water. The same effect is obtained by violently agitating the…
Liquation
The process of sweating out, by heat, the more fusible metals of an alloy.
Liquefaction
The conversion of a solid into the liquid state, either by heatfusion, (see No. 19); absorption of water from the air-deliquescence; or the…
Lixiviation
The process of disolving out or extracting the saline matter of bodies, more especially of ashes, &c., by means of ablution or digestion in…
Precipitation
This is the method stances it holds in suspension. The most for obtaining solid matter, by mixing two or efficient filter is produced when…
Gun-cotton as a Filter
Gun-cotton, carefully prepared, is scarcely acted on by the most energetic chemical agents at ordinary temperatures. It may therefore be…
Fusion
Aqueous fusion is the dissolving of crystalline compounds in their own water of crystallization, by the application of one drop of the…
Pulverization
The reduction of any substance to dust or powder is generally | ceases to dissolve any more of it. An acid is performed by means of a…
Sifting
This is a means employed pulverized by simply rubbing through a fine to obtain uniformity of fineness in a pulversieve; while many hard and…
Reduction
This term is applied to a process by which the oxygen is withdrawn from a metallic oxide, leaving the base in its original state. This is…
Saturation
A liquid is said to be saturated with some other substance when it takes up much time. The best plan is to suspend the salt in a colander…
Sublimation
The process by which volatile solid substances are reduced to the case necessary, and should be avoided, espestate of vapor by heat, and…