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

Automatic interior car lights control, hi there, i need to know if its poss...

hi there, i need to know if its possible to create a circuit of automatic interior car lights control

Die press assembly , how to make Die Press Assembly Drawing in autocad?

how to make Die Press Assembly Drawing in autocad?

Assignment on risk and return, Assignment on Risk and Return# Stock has bet...

Assignment on Risk and Return# Stock has beta of 1.5 & an expected return 11%. A risk free asset earns 2%. Determine the expected return on a portfolio that is equally invested in

ENMIN5018, Design a detailed surface mine excavation plan. Detail developme...

Design a detailed surface mine excavation plan. Detail development requirements. Detail Production requirements including a full description of the method selected. Number of produ

Tig and mig welding techniques, Q. Explain the TIG and MIG systems of arc w...

Q. Explain the TIG and MIG systems of arc welding Give the applications of each.                                                         OR         Explain briefly

High rise buildings - fire protection engineering, High rise buildings: ...

High rise buildings: High rise buildings have their own particular requirements for fire safety and for fire fighting.  Means of escape rely on most people descending the stai

Time motion study, how to create a chart of time motion study

how to create a chart of time motion study

Rake angle, the effect when side relief angle is too much

the effect when side relief angle is too much

Shell moulding process merits and demerits, Q. Describe shell moulding proc...

Q. Describe shell moulding process merits and demerits . Ans. Shell moulding process           Merits                                                   (i) Bett

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