Isomorphous substances are found to be closely allied in their chemical nature; and the fact of two bodies crystallising in the same form has often led to the discovery of other points of similarity between them.
It may be obtained in at least two different forms, oneisomorphous with NaCl.
H2O, crystallizing in the orthorhombic system and isomorphous with diaspore and gothite.
It crystallizes in dark purple-red prisms, isomorphous with potassium perchlorate.
That the deportment of magnetic crystals is exactly antithetical to that of diamagnetic crystals isomorphous with the magnetic ones, was proved to be a general law of action.
In all cases, the line which in a diamagnetic crystal set equatorially, always set itself in an isomorphous magnetic crystal axially.
Amongst minerals there are many examples of isomorphous groups, e.
For the purpose of comparing the crystalline forms of isomorphous and morphotropic substances it is usual to quote the angles or the axial ratios of the crystal, as in the table of benzene derivatives quoted above.
From these considerations the following law may be deduced: The specific weight of isomorphous bodies is proportional to their atomic weight, or isomorphous bodies possess the same atomic volume.
As examples of the solution of solids in solids we have the cementation of iron by charcoal, the formation of glass, and the crystallization together of isomorphous substances.
These laws, however, can no longer be applied in the case of the concentrated solid solutions formed by the crystallization together of isomorphous substances, and known as isomorphous mixtures.
Indeed, it has been contended[264] that these isomorphous mixtures should not be considered as solid solutions at all, although no sharp line of demarcation can be drawn between the two classes.
Being isomorphous with augite, crystals intermediate in composition between augite or diopside and aegirite are not uncommon, and these are known as aegirine-augite or aegirine-diopside.
H2O, isomorphous with ferrous sulphate, results on dissolving the metal in dilute sulphuric acid or, better, by dissolving chromous acetate in dilute sulphuric acid, when it separates in blue crystals on cooling the solution.
The alkaline perchlorates are isomorphous with the permanganates.
It forms dark red crystals isomorphouswith ferrous sulphate, and readily soluble in water.
It is found as granular to compact masses, and frequently as beautifully developed crystals, which have the same symmetry as the isomorphous mineral pyrites, being cubic with parallel hemihedrism.
The majority of the chromates are yellow in colour, and many of them are isomorphous with the corresponding sulphates.
Illustration] Crystals of barytes are orthorhombic and isomorphous with the strontium and lead sulphates (celestite and anglesite); they are usually very perfectly developed and present great variety of form.
It crystallizes as BaBr2 ยท 2H2O isomorphous with barium chloride.
It is rhombohedral in crystallization and isomorphouswith calcite and chalybite.
According to the observations of De Boisbaudran, Gernez, and others, isomorphoussalts (analogous in composition) are capable of inducing crystallisation.
More useful is the property of isomorphous substances of forming mixed crystals, which are strictly isomorphous with their constituents, for all variations in composition.
For a detailed comparison of the isomorphous relations of the elements the reader is referred to P.
Isomorphism is most clearly discerned between elements of analogous chemical properties; and from the wide generality of such observations attempts have been made to form a classification of elements based on isomorphous replacements.
Being isomorphous with aragonite, it crystallizes in the orthorhombic system, but simple crystals are not known.
But these differences are not such as to preclude the crystals from all species of a genus being placed in an isomorphous series (p.
With palladium chloride there occurs a yellow, hair-like, crystalline precipitate; later crystals, which areisomorphous with the nickel and copper salts.
Its salts areisomorphous with those of alumina and sesquioxide of iron.
Since argentite (Ag2S) is isomorphous with galena, it is probable that the silver isomorphously replaces lead, but it is to be noted that native silver has been detected as an enclosure in galena.
The types are usually modified byisomorphous replacement of some of their elements.
Arsenic possesses a steel-grey colour, and a decided metallic lustre; it crystallizes on sublimation and slow condensation in rhombohedra, isomorphous with those of antimony and tellurium.
Its combinations being isomorphous with those of sulphuric acid, and possessing the same crystalline forms, and the same general chemical properties, present but very slight, though very interesting differences from the sulphates.
The acid isisomorphous with the sulphuric, and may with propriety be called selenic acid, that described by M.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "isomorphous" in a variety of sentences. We hope that you will now be able to make sentences using this word.
