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

Calculating the thrust of the engine - engine performance, Calculating the ...

Calculating the thrust of the engine: When applying the above method to calculate the individual thrust loads on the various components it is assumed that the engine is static.

electronics and communication, I want to join.Please help me in completing...

I want to join.Please help me in completing the process

Define instant demit account?, What is Demit Account? What is the use of...

What is Demit Account? What is the use of it? Demit indicates Dematerialization of reveal, in easy it is an account with which a individual can business in protection industry w

Zener diode, easy defination of zener diode nd its application and characte...

easy defination of zener diode nd its application and characteristics ?

Embedded system, I have an assignment of engine control unit (hardware desi...

I have an assignment of engine control unit (hardware design and programming) if you have an expert.....

Query about Finite Element Analysis assignment service , Hi, I require a s...

Hi, I require a service which involves finite element modelling on commercial software package "ABAQUS". I am personally not sure how to model this on ABAQUS and thats why I have

Diffraction, Q.  What do you mean by diffraction? Distinguish between Fres...

Q.  What do you mean by diffraction? Distinguish between Fresnel's and Fraunhofer's classes of diffraction. Ans. The phenomena of diffraction in case of light was first observ

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