Amorphous Solid

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What Is Amorphous Solid?

An amorphous solid is that wherein the constituent particles don't have a customary three-dimensional course of action. Amorphous solids, without the three-dimensional long-range request of a glasslike material, have a more irregular game plan of particles, show short-range request over a couple of atomic dimensions, and have physical properties very not quite the same as those of their comparing translucent states.

Amorphous solid look like liquids in that they don't have an arranged structure, an organized plan of atoms or ions in a three-dimensional structure. These solids don't have a sharp dissolving point and the solid to liquid transformation happens over a scope of temperatures. The physical properties displayed by amorphous solids are commonly isotropic as the properties don't rely upon the direction of estimation and show a similar extent in various directions.

This article, we will study what is amorphous solid, the difference between crystalline and amorphous solids, properties of amorphous solids, characteristics of amorphous solids, and what is an amorphous form.

Amorphous Solid Structure

Given below is an amorphous solid structure.

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Properties of Amorphous Solids

Amorphous solid are now and again portrayed as a supercooled liquid because their particles are organized arbitrarily fairly as in the liquid state.

  1. Absence of Long - Range Order

Amorphous Solid doesn't have a long-range order of course of action of their constituent particles. Nonetheless, they may have little regions of the orderly plan. These translucent pieces of a generally amorphous solid are known as crystallites.

  1. No Sharp Melting Point

An amorphous solid doesn't have a sharp melting point however melts over a scope of temperatures. For instance, glass on warming initially mellow and afterwards melts over a temperature range. Glass, consequently, can be formed or blown into different shapes. Amorphous solid doesn't have the trademark warmth of fusion.

  1. Conversion Into a Glasslike Form

Amorphous solid, when warmed and afterwards cooled gradually by toughening, gets translucent at some temperature. That is the reason glass objects of antiquated time look smooth due to some crystallization having occurred.

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Difference Between Crystalline and Amorphous Solid


Crystalline Solid

Amorphous Solid


The constituent particles, atoms, molecules, or ions, are arranged in a definite and regular three-dimensional manner. Consider, for example, sugar, diamond, sodium chloride, etc.

The constituent particles are arranged in an irregular three-dimensional manner.

Cutting with a knife

Gives a clean and sharp cleavage

Gives an unclean cleavage


It is rigid and incompressible

It is generally rigid and can not be compressed to an appreciable extent.

Melting point

Crystalline solid melting point is definite and sharp.

Amorphous solid melting point is not definite. It melts over a wide range of temperatures.

Heat of fusion

It is definite

It is not definite

Physical properties

Crystalline solid is anisotropic which means that their physical properties are not identical in all directions.

Amorphous solid is isotropic, which means that their physical properties are identical in all the directions.

Amorphous solids find numerous applications as a result of their remarkable properties. For instance, inorganic glasses discover applications in construction, houseware, research facilities, Rubber another amorphous solid is utilized in making tires, tubes, shoe soles and so on Plastics are utilized broadly in family units and industry.

Examples of Amorphous Solids

Examples of amorphous solids are glasses, earthenware production, gels, polymers, quickly extinguished melts and slender film frameworks kept on a substrate at low temperatures. The investigation of amorphous materials is a functioning territory of examination. Notwithstanding tremendous advancement, as of late our comprehension of amorphous materials stays a long way from complete. The explanation is the nonappearance of the simplifications related to periodicity.

Regardless, from a correlation of the properties of materials in glasslike and an amorphous express, the fundamental highlights of the electronic structure and accordingly likewise perceptible properties are dictated by short-range order. Hence these properties are comparative for solids in the amorphous and glasslike state.

A few examples of amorphous solids are glass, elastic, pitch, numerous plastic and so forth Quartz is a case of a translucent solid which has standard order of the arrangement of SiO4 tetrahedra. On the off chance that quartz is melted and the melt is cooled quickly enough to evade crystallization an amorphous solid called glass is acquired.

Amorphous Solids are Isotropic

Amorphous solids are isotropic. That is, they display uniform properties every which way. The warm and electrical conductivities, coefficient of warm expansion and refractive file of an amorphous solid have a similar incentive in whatever direction the properties are estimated.

Some random translucent solid can be made amorphous by the quick cooling of its melt or by freezing it's fume. This doesn't permit the particles to arrange themselves in a glasslike pattern. At the point when quartz the glasslike form of SiO2 is melted and afterwards quickly cooled, an amorphous solid known as quartz glass or silica glass results. This material has a similar composition SiO2 however comes up short on the sub-atomic level orderliness of quartz.

The amorphous form of metal alloys is acquired when slim movies of melted metal are quickly cooled. The subsequent metallic glasses are solid, adaptable and substantially more impervious to corrosion than the glasslike alloys of similar composition.

FAQ (Frequently Asked Questions)

1. What Does Amorphous Solid Mean?

Ans: An amorphous solid has no distinct form, either mathematical or translucent. An amorphous solid is any non-glasslike solid that doesn't arrange the atoms and particles in a positive cross-section pattern. There are plastic, glass, and gel solids.

Amorphous solids have two characterizing properties. They make particles of odd, regularly wound surfaces when separated or broken; and they have ineffectively portrayed patterns when presented to x-beams because their segments are not composed in a normal grouping. A straightforward, amorphous material is called wine.

2. What Happens When an Amorphous Solid Breaks?

Ans: Amorphous solids break into lopsided pieces with sporadic edges. Furthermore, they don't have any particular arrangement or state of particles. Hence they can't be recognized by their structure as precious stones.