Differentiate crystalline and amorphous materials, Other Engineering

Assignment Help:

Q. Differentiate crystalline and amorphous materials?

(a)Crystalline solids: Those solids in which the, ions atoms or molecules in a definite regular repeated three dimensional pattern are called solids. Thus the atoms or molecules in crystalline solid are arranged just as the sliders do on the parade ground.

 e.g.Calcite, rock-salt, quartz, sugar-mica, diamond etc.

(b)Amorphous solids: Those solids in which the constituent atoms or molecules are not arranged in a definite pattern, repeating in three dimensions are called amorphous solid or materials.

e.g.plastic, glass etc.


Crystalline materials

Amorphous materials

(a)  The constituent's ions or molecules in a given crystalline solid are arranged in a definite geometrical pattern.

The constituent's atoms or molecules in these solids are not arranged in a regular definite geometrical pattern.

(b)  These have a definite external geometrical shape.

These are not regular in their external shape.

(c)  These have a long range order of atoms or molecules.

These do not have a long range order of atoms or molecules.

(d)  All the bonds among molecules in these solids are equally strong. The crystalline solids have a sharp melting point.

Amorphous solid do not have a sharp melting point, because the weakest bond get reputed at lower temperature and stronger bonds get reputed at higher temperature.

(e) These are anisotropic i.e. the bond of crystalline solids have directional properties.

These solids sre isotropic as their physical properties are same in all direction.

In crystalline solids the angles between the flat surfaces of the crystal are constant.

These are super cooled  liquid of high viscosity.


Related Discussions:- Differentiate crystalline and amorphous materials

Engine fuel control systems - aircraft engine, Engine fuel control systems:...

Engine fuel control systems: The thrust of a turbo jet is controlled by varying the amount of fuel that is burnt in the combustion system and in order to operate the safe tempe

Decision table software engineering, Write a decision table that specifies ...

Write a decision table that specifies the rules for the game of checkers.

Evacuation in a hospital - fire protection engineering, Evacuation in a hos...

Evacuation in a hospital - fire protection engineering: An evacuation in a hospital is very unlikely to require anyone to go outside. The buildings are split into numerous fir

Structures , how to find the equation for deflection of a cantilever beam s...

how to find the equation for deflection of a cantilever beam subjected to udl in terms of Airy''s stress function

Shell-mould casting, Shell-mould Casting is variant of the resin bonded sa...

Shell-mould Casting is variant of the resin bonded sand technique for casting steel, iron or non-ferrous alloys. The mould is made by a mixture of fine sand (100 - 150 mesh) an

Oil pumps, what is the function and location of the components?

what is the function and location of the components?

Bme, advantages and disadvantages oh hot and cold die working in the subjec...

advantages and disadvantages oh hot and cold die working in the subject of basic mechanical engineering

Providing fire resistant - fire safety management, Providing fire resistant...

Providing fire resistant: If the building does not provide everyone with alternative exit routes then it may be acceptable for people to pass the fire if they are separated f

Router, how does the Ip message finally reassemble?

how does the Ip message finally reassemble?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd