Verbs, like nouns and adjectives, may be merely the names of simple recepts, or they may be compounds of other concepts—in either case differing from nouns and adjectives only in that they have to do with actions and states.
According to their origin and constitution they may be distinguished as nitro compounds, sulphonated azo compounds and sulphonated basic colours.
In recent years chemists have begun to regard the constitution of nearly all dyestuffs as similar to that of Quinone, and some even believe that all coloured organic compounds have a quinonoid structure.
He also investigated the oxygen compounds of phosphorus and nitrogen, and was one of the first to hold the hydrogen theory of acids.
Such compounds containing chromophorous groups are termed chromogens, because, although not dyestuffs themselves, they are capable of generating such by the further introduction of salt-forming atomic groups, e.
It is usually desirable to keep the solutions cool with ice, owing to the very unstable nature of the diazo compounds produced.
Thus, a plant extracts from the earth and air certain inorganic compounds which are converted by the activity of the plant into a part of its own substance, becoming thus incorporated into a living organism.
The medicines are perhaps no more harmful than the patent compoundsof other places.
They make all sorts of noxious compounds which are retailed as good for various ailments.
In later years they were employed chiefly in the preparation of drugs, but more recently they have been superseded by the modern way of preparing spices and other compounds by machinery.
The mortar had, of course, a very general use, and was needed everywhere in days when so many compounds were prepared by hand labour.
The ancient bronze of prehistoric days must not be confused with the metals or compounds of copper and its alloys which enabled the Greeks to produce such wonderful statues.
Those elements were combined in chemicalcompounds similar, if not identical to, those of the Earth vegetation.
The new gadget simply converted the compounds in the large coil to match those in the sample--in the tin can--and assembled them in the small coil according to the physical structure of the sample.
With the sulphates of ammonium and potassium it unites to form compounds to which the name 'iron alums' has been given.
It is very soluble in the alkaline hyposulphites, forming compounds possessing an intensely sweet taste.
The above compounds require to be used with caution.
Its principal compounds with oxygen are the iodic and periodic anhydrides.
The advantages attending its employment, he says, are: that it may be administered in large doses; that it does not possess the irritating properties of free iodine; and that it readily forms harmless compounds with the substances named.
Saline compounds are the substances most frequently employed for this purpose, and those which have the greatest affinity for water, and thus liquefy the most rapidly, produce the greatest degree of cold.
Buric acid forms red insoluble compounds with the earths and some other metallic oxides.
It forms a number ofcompounds analogous to those of ethyl.
These compounds are used to promote the growth of the hair and to prevent baldness, for which purpose they are usually coloured and scented according to the taste of the manufacturer.
The gas has great illuminating power, requires no purification, and is quite free from the ammoniacal and sulphur compounds which vitiate coal-gas.
By some chemists, cyanogen compounds are supposed to be present in the cementation powder, and the cyanogen contained in these is supposed to be the carrier of the carbon to the iron.
He found that not only this alkaloid itself, but also all its compounds with acids, were equally amorphous.
The symbols of compounds become very concise, as the number of atoms of one kind in a molecule can be expressed by a sub-index.
Fortunately, the compounds at first examined by the chemists engaged in verifying these laws were comparatively simple, so that the whole numbers referred to above were small.
If chemical compounds can be proved by experiment to obey these laws, then the atomic theory acquires a high degree of probability; if they are contradicted by experiment then the atomic theory must be abandoned, or very much modified.
But, unfortunately, the assumption as to the number of atoms in the molecules of these two compounds was an arbitrary one, based on no valid evidence.
If the chemist compounds two pure simple elements, there can be but one result, and no power of the chemist can prevent it.
As thus prepared, radium is a well-marked chemical element, forming a series of compounds analogous to those of barium and showing a characteristic line spectrum.
In the case of many organic compounds their morphological characters (the physical condition, crystalline form, etc.
It was soon discovered that the activity of uraniumcompounds was proportional to the amount of uranium present in them.
The activity of a series of compounds is found to accompany the presence of a radio-active element, the activity of each compound depends only on the contents of the element, and is independent of the nature of its combination.
Becquerel discovered that compounds of the metal uranium continually emitted rays capable of penetrating opaque screens and affecting photographic plates.
Now, it is a law of our reason to suppose in Nature unity of substance as well as unity of force and system; moreover, the series of chemical compounds and simple substances themselves leads us irresistibly to this conclusion.
It forms crystalline compounds with bromine and with many metallic salts.
In the case of the polybasic acids, all the hydrogen atoms can be replaced in this way, and the compounds formed are known as "neutral esters.
With the Grignard reagent, they form addition compounds which on the addition of water yield tertiary alcohols, except in the case of ethyl formate, where a secondary alcohol is obtained.
A normal diet contains much more iron than the body needs, but in special cases, sometimes called “tired blood” in advertising for medicines, iron compounds are prescribed for the patient.
The difficulty is that most boron compounds themselves are poisonous to human tissues, and only small concentrations can be tolerated in the blood.
Efforts have been made, with some success, to synthesize new boron compounds that have the greatest possible degree of selective absorption by the tumors.
Both organic and inorganic compounds have been tried, and the degree of selectivity has been shown to be much greater for some than for others.
A reverse process, which has a less conspicuous part in our first view of the animal's life action, by which unstable compounds are built up and energy stored, is called anaboly.
The food stuffs of an animal, the unstable compounds destined ultimately to be worked into its life, and to leave it again in the form of katastases (Section 13), fall into two main divisions.
Ammonia and its compounds are rarely used, while stale urine, which acts in virtue of the ammonia it contains has practically gone out of use.
Yet no physician can say at what moment any of these carbon compounds become living, or when they cease to have life.
Between these condensed compounds and the pure elements the continuous transition of the physical and chemical properties is often effected by insensible degrees, by a mixture of definite compounds.
These compounds are more soluble than are the minerals out of which they were formed, and they are also more bulky and so tend to crack off from the parent mass on which they were formed.
The crystal quality belongs to the chemical elements and to their compounds in the solid condition, but not to ordinary mixtures of them.
If, however, one of the para positions in the hydrazo compound is substituted, then either diphenyl derivatives or azo compounds are formed, or what is known as the semidine change takes place (P.
Chemically it is one of the most interesting substances known, since it is the parent of the enormous number of compounds styled the "aromatic" or "benzenoid" compounds.
A summary of its chemical transformations may be given here, and reference should be made to the articles on the separate compounds for further details.
Benzene is of exceptional importance commercially on account of the many compounds derivable from it, which are exceedingly valuable in the arts.
This compound condenses in alkaline solution with compounds containing the grouping -CH2-CO- to form quinoline (q.
The products of roasting inter-react to produce many compounds of varying degrees of complexity and toxicity.
The irritating elements may be generally classified as compoundsformed upon the addition of cream or milk to the coffee liquor, volatile constituents, and products formed by hydrolysis of the fibrous part of the grounds.
The rate of hydrolysis also increases with temperature: and as these compounds are of an astringent or bitter nature, the solution obtained upon boiling coffee is naturally possessed of a flavor unpleasant to the palate of the connoisseur.
Lead acetate forms three different compounds with "caffetannic acid," so that this reagent must be added with extreme care in order to precipitate the compound desired.
Further substantiation of this contention, and more evidence of the innocuous character of the tannin-like compounds in coffee, are contained in the testimony of Sollmann.
It is now generally agreed that the aromatic constituent of coffee is not an essential oil, but a complex of compounds which usage has caused to be collectively called "caffeol.
It is these compounds which supply the pleasingly aromatic and appetizing odor to coffee.
The structure of thesecompounds was established, and their syntheses accomplished, in the course of various classic researches by Emil Fischer.
However, man is not as susceptible to these compounds as are the smaller animals.
The latter, apparently produced during roasting and retained by the cellular structure of the bean, diffuses therefrom; whereas the former comes from an ante-roasting decomposition of unstable compounds present.
None of the compounds of lead stain the skin, an advantage which has led to a preference being given to them by many persons who are clumsy manipulators, and to the more extensive use of them than of other hair dyes.
It will be useful here to inform the inexperienced reader that all solutions and compounds which contain nitrate of silver stain the skin as well as the hair, if they be allowed to touch it.
Gerarde refers to the use made by the alchymists of this Fern in those mystic compounds over which they pored night and day, and he also states that it was a plant prized by witches, who called it Martagon.
Why with the time do I not glance aside To new-found methods, and to compounds strange?
Like as to make our appetite more keen With eager compounds we our palate urge, As to prevent our maladies unseen, We sicken to shun sickness when we purge.
I will try the forces Of these thy compounds on such creatures as We count not worth the hanging- but none human- To try the vigour of them, and apply Allayments to their act, and by them gather Their several virtues and effects.
There is thy gold- worse poison to men's souls, Doing more murther in this loathsome world, Than these poor compounds that thou mayst not sell.
Phosphatides and Phosphagens The important phosphorus compounds in organisms are much more complex than the simple salts, to which Nietzsche attributed such influence on man's character.
Once the fundamental chemistry of these acids was elucidated, the attention of chemists and physiologists turned to the task of finding the actual state in which phosphorus compoundswere present in the organisms.
One group of such compounds was discovered in 1929 by W.
Graham had come to this understanding of the phosphoric acids through his previous studies of "Alcoates, definite compounds of Salts and Alcohol analogous to the Hydrates" (1831).
The developers of industrial production and commercial utilization of phosphate compounds have had other rewards.
On the other hand, there are phosphate compounds that act as poisons.
The acids are now shown to be compounds of the "undecomposed" radicals, the complete reversion of the previous concept of this relationship.
This word was intended to designate compounds which contain the same number of atoms of the same elements but combined in different manners, thereby explaining their different chemical properties and crystal forms.
What would a modern philosopher conclude if he followed the development of insight into the composition and function of complex phosphate compounds in organisms?
Thus, adenosine phosphate has been recommended in cases of angina pectoris and marketed under trade names like sarkolyt, or in compounds named angiolysine.
A transition of carbohydrates through phosphate compounds to the end products of the fermentation process was found, and it gradually proved to be a kind of model for a host of biological processes.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "compounds" in a variety of sentences. We hope that you will now be able to make sentences using this word.
