Local action might be prevented by the use of chemically pure zinc, but this, on account of its expense, cannot be employed commercially.
All the varieties of coal, also, consist chemically of carbon, with varying proportions of certain gaseous constituents and a small amount of incombustible mineral or "ash.
Indeed we find the change of a dissolved substance into an insoluble organ of vitality, chemically speaking, natural and easily explained, on account of this very identity of composition.
When chemically examined, caseine is found to contain a much larger proportion of the earth of bones than blood does, and that in a very soluble form, capable of reaching every part of the body.
And they make their appearance in the proper environing conditions, just as the oak comes from its primordial germ or vital unit in the chemically changed conditions of the soil.
The reason for their appearance is the same as that governing truffle spores--they come whenever conditions favor, that is, whenever the soil is chemicallybalanced for their development and growth.
The intensity of the response, however, does not depend on the chemical activity of the substance, for the electromotive variation in the relatively chemically inactive tin is greater than that of zinc.
I have obtained this effect with various metals, for instance lead and tin, and even with the chemically inactive substance--platinum.
It is liable to more impurities than that made from pure alcohol, but, of course, its composition is the same, and it has recently been manufactured from this source almost chemically pure.
A woman, aged 30, tasted a liquid used for flavouring pastry, which was afterwards chemically identified as pure nitro-benzene.
A ptomaine, discovered by Brouardel,[535] was described by him as both chemically and physiologically analogous to veratrine.
Chemically it gives all the tests described by Weir Mitchell and others as characteristic of the venom of Naja tripudians.
Commercial samples have a most repulsive and penetrating odour, but chemically pure carbon sulphide has a smell which is not disagreeable.
Cotton seeds contain a poison of which nothing is chemically known, save that it is poisonous.
Chemically cocaine is a derivative of ecgonin, being ecgonin-methyl-ester.
Growth and Development of the Modern Methods of Chemically Detecting Poisons.
When Dalton's atomic theory had been in existence some half century, it was noted that certain numerical relations held good between the atomic weights of elements chemically similar to one another.
Time of half Radio- Properties decay activity Radium About 2600 years alpha rays Element chemically analogous to barium.
Since the ions are usually more active chemically than the molecules, most of the chemical properties of an electrolyte are due to the ions rather than to the molecules.
On the other hand, chemically pure sulphuric acid, i.
Chemically iodine is quite similar to chlorine and bromine, but is still less active than bromine.
At ordinary temperatures chlorine is far more active chemically than any of the elements we have so far considered, with the exception of fluorine; indeed, it is one of the most active of all elements.
When sulphur dioxide dissolves in water it combines chemically with it to form sulphurous acid, an unstable substance having the formula H{3}SO{3}.
These six rare elements have very similar physical properties and resemble each other chemically not only in the type of compounds which they form but also in the great variety of them.
In 1825 Döbereiner observed that an interesting relation exists between the atomic weights of chemically similar elements.
Before we can gain any very definite idea in regard to the structure of matter, and the way in which different kinds of substances act chemically upon each other, it is necessary to have clearly in view three fundamental laws of matter.
Most of these combine chemically with lime, while ammonia does not; if then lime is added to the gas liquor and the liquor is heated, the ammonia is driven out from the mixture.
Care must be taken to use such pigments as are not affected by a high heat and do not react chemically with the constituents of the baked ware or the glaze.
His observations are summed up in the following law: When two gases combine chemically there is always a simple ratio between their volumes, and between the volume of either one of them and that of the product, provided it is a gas.
Chemically it is very active, combining directly with a great many substances.
These percentages are on the supposition that the ores are chemically pure; the percentage of metal actually obtained is somewhat less.
Carbonic acid gas in water also has the power to chemically alter various minerals in many common rocks and thus the rocks fall apart and the carbonates which result from the action usually are carried away in solution.
The muriatic acid of commerce has usually a yellowish tinge, but whenchemically pure it is colorless.
Most experienced operators have been long acquainted with the effect of the vapor of ammonia upon the chemically coated plate.
The first yellow surface appears to be an oxide of silver with, possibly, a minute quantity of copper in combination, which being removed leaves a surface chemically pure.
If a current be so directed that it may act chemically in one part of its course, and magnetically in another, the two actions are always found to take place together.
The series of numbers representing electro-chemical equivalents must, like those expressing the ordinary equivalents of chemically acting bodies, remain subject to the continual correction of experiment and sound reasoning.
B] Thermo-electric currents are of course no exception, because when they fail to act chemically they also fail to be currents.
Rive's theory, why the metal of the positive pole should not be transferred across the intervening conductor, and deposited at the negative pole, even when it cannot act chemically upon the element of the fluid surrounding it.
The following are various substances, taken from very different classes chemically considered, which are subject to this law.
A] In making this experiment, care must be taken that no substance be present that can act chemically on the gold.
I conclude that a part of the water is electro-chemically decomposed, giving origin to the oxygen, which appears mingled with the chlorine at the anode.
A chemical solution of cotton which is destitute of ligneous matter will give a chemicallypure solution.
Yet human flesh is chemically identical with animal flesh, and if it be true that to boil an egg is the same thing as to roast an ox, it follows that to butcher an ox is the same thing as to murder a man.
This chemically controlled research evolved a product which, after passing through the laboratory stage, was placed upon a small unit plan basis, and then patented.
Fiber packages include paraffin-lined as well as those that have been chemically treated with other water-proof and flavor-retaining substances.
The caffein in the roasted coffee is not as tightly bound chemically as in the green coffee, and is, therefore, more easily extracted.
Generally, coffee containers are lined with chemically treated paper or foil to keep in the aroma and flavor, and to keep out moisture and contaminating odors.
Chemically purified and neutralized rosin as a glaze (harz-glasur) for roasted coffee, designed to keep it fresh and palatable, is first discovered and applied in Germany.
The milk is not boiled nor chemically altered in any way, though completely sterilised by the heat.
If air is forced through incandescent carbon in a closed furnace its oxygen unites with the carbon and forms carbonic acid gas, known chemically as CO{2}, because every molecule of the gas contains one atom of carbon and two of oxygen.
Some of the alumina and iron oxide may occasionally be chemically combined, so as to form an iron spinel, or hercynite.
Thus it is likely that Gallic Acid may act along with this saccharine matter in the blood, and by this acquire chemically an astringent power, which it is not able to exert on external parts, because then isolated.
They consist chemically of peculiar acids, which, though themselves insoluble in water, combine with alkalies to form salts which are soluble.
Mercury, Sulphur, and Iodine, have been detected chemicallyin it.
Another fact which gives additional credibility to such an idea is, that those Neurotic substances which are chemically alike are in general alike also in their influence on nerve.
In cases of Pyrosis, where there is an alkaline reaction in the vomited fluid, as sometimes occurs, Sulphuric acid is still more peculiarly applicable, because it further acts chemically in neutralizing this alkali.
Taurine is soluble in water, and crystallizable; is chemically analogous to the tonic bitter principles; and contains the same four elements as Quina.
And it is also evident that these medicines are able to supply their place; for, after one is given in a case of urinary deposit, this latter disappears, at the same time that the solvent remedy may be detected chemically in the urine.
I have already made use of Taurine, one of the principles of the Bile, for the purpose of showing that among the natural constituents of the blood there is a substance whichchemically resembles a tonic alkaloid, like Quina.
One of these, Taurine, has been shown to be chemically analogous to Quinine.
This medicine acts chemically as an acid in the blood and in the secretions.
It acts both by mechanically absorbing irritating fluids, and protecting the surface of the bowel, and by chemically neutralizing an acid matter by which the irritation is maintained.
The most important of the substances which are used to increase secretion may be divided chemically under the following six heads, of all of which it has been proved that they are capable of absorption.
In the Plante type the lead is chemically attacked and finally converted into lead peroxide, probably after it has gone through several intermediate changes.
The box has a chemicallytreated wood lining to make it acid proof.
One part of chemically pure concentrated sulphuric acid is mixed with several parts of water.
In fact, so important are they that all others may be included in a discussion of the crotalidæ; more particularly so as all serpent venoms act chemically in the same manner.
Restrict the circulation, destroy the virus by heat either chemically or by fire, and keep up the vital forces.
The sour taste is aroused by most acids, but not by all, and also by some substances that are not chemically acids.
Water, which was so long held to be a simple element, has, in modern times, been proved to be a substance consisting of two aeriform bodies or gases chemically combined.
Hydrogen gas is, however, not usually disengaged from coal in a simple form, but combined chemically with a certain portion of carbon, the combination being called carburetted hydrogen.
Of these ancient glasses several have been examined chemicallyby Klaproth, Hatchett, and some other individuals, in order to ascertain the substances employed to give colour to the glass.
Irvine, who showed that it was owing to a diminution of the specific heat which takes place when liquids combine chemically together.
Middle hard gelatine should therefore be used unwashed for Collotype work, and mixed with chemically pure potassium bichromate.
The green screen allowing to pass so few chemically active rays the exposure has to be prolonged to such an extent that gelatine bromide dry plates stained with eosine must of necessity be used.
This disease may be occasioned by acrid or indigestible matters taken into the stomach, which may chemically or mechanically injure its interior coat.
Does itchemically destroy the stomach, and life in consequence?
When applied externally it seems chemicallyto destroy the part like other caustics.
Thirdly, by chemically destroying extraneous bodies, as caustic alcali, lime, mild alcali in the stone.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "chemically" in a variety of sentences. We hope that you will now be able to make sentences using this word.
