amorphous solid dispersions

Amorphous Solids - Substances whose particles do not posses a regular orderly arrangement but have short range order. When amorphous solids are heated they become crystalline at some temperature. Properties of amorphous solids are: They do..

Substances whose constituents are not arranged in an orderly manner are called amorphous solids. They are also called pseudo solids and differ from crystalline solids in many respects. The common examples of amorphous solids are glass, ru..

Solids with particles not arranged in a regular fashion. They have only short range order or even the particles are disordered in some case..

Crystalline and Amorphous Solids - Solids have definite shape and volume because the average distance between the molecules or atoms remain constant and do not change with time. The arrangement of molecules inside a solid differ from one to another. This resu..

Solids have definite shape and volume because the average distance between the molecules or atoms remain constant and do not change with time. The arrangement of molecules inside a solid differ from one to anothe..

These are crystalline solids, constituted of very fine crystals, not seen by the naked eye. These solids appear amorphous but are not so because the fine crystals are randomly oriented. Thus even though each individual crystal is anisotropic the polycrystalline materi..

The above properties suggest that the properties of the solids not only depend upon the nature of the constituents, but also on their arrangements. Based on their structural features solids can be classified into three categories: Crystalline solids Amorphous..

Nature of Solid Catalyst - Heterogeneous catalysis is extensively used in chemical industry. Hence, development, selection and application of solid catalysts forms an important area in surface chemistry studies. The nature of the solid catalyst has profound effects on ..

Heterogeneous catalysis is extensively used in chemical industry. Hence, development, selection and application of solid catalysts forms an important area in surface chemistry studies. The nature of the solid catalyst has profound effects on heterogeneous catalytic reactio..

A spray of sodium hydrogen carbonate is dispersed over the fires. It decomposes to give carbon dioxide, which puts out the fire. The sodium carbonate produced also helps by forming a layer over the burning object. The types of fire extinguishers mentioned above are not effective in case..