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

Harriman, HARRIMAN MANUFACTURING COMPANY Harriman Manufacturing Company i...

HARRIMAN MANUFACTURING COMPANY Harriman Manufacturing Company is evaluating the purchase of a new piece of equipment. The quoted price is $50,000, and it would cost Harriman anot

Noise reduction in aircraft design, Noise reduction The problem of engi...

Noise reduction The problem of engine noise has always been associated with aircraft. Increases in engine power have given rise to increases in noise and the indications are t

microprocessors, how can you access the general purpose registers of Micro...

how can you access the general purpose registers of Microprocessor in windows XP/2000/98...

Digital electronics, Design 2:1 MUX with strobe input using NAND gates

Design 2:1 MUX with strobe input using NAND gates

State vectors , State Vectors  In engineering - particularly control...

State Vectors  In engineering - particularly control engineering - most systems are represented by a state vector.  - The state vector contains all of the relevant qua

Applications and demerits of electron microscope, Applications - (1)   ...

Applications - (1)          Electron microscopy is widely used in metallurgy, biology, material science, physics, chemistry, and many other technological fields. The developmen

Tin smelting, How can calculate for charging of tin smelting with reverbera...

How can calculate for charging of tin smelting with reverberatory furnaces?

Airflow through divergent and convergent ducts, DIVERGENT DUCT A divergen...

DIVERGENT DUCT A divergent duct widens out as the airflow progresses through it. At subsonic speeds the effect of this kind of duct is to decrease the velocity and increase the p

Homework, 1) An investment project requires a net investment of $100,000. T...

1) An investment project requires a net investment of $100,000. The project is expected to generate annual net cash flows of $28,000 for the next 5 years. The firm''''s cost of cap

Oscilloscope probes, Direct probe,isolation probe,high impedence probe,acti...

Direct probe,isolation probe,high impedence probe,active probe,current probe

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