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

Thermofluids 1- aeronautical option, general energy equation, non- flow ene...

general energy equation, non- flow energy equation, steady flow equation, joule''s law

New assembly buildings - fire protection engineering, N e w Assembly Buil...

N e w Assembly Buildings: 12.1.1.1 The requirements of this chapter shall apply to new buildings or portions thereof used as an assembly occupancy. 12.1.3.2 Simultaneous

Explain in brief about priority rules for scheduling?, Question 1 A large ...

Question 1 A large number of forecasting methods are available. Discuss the categories of forecasting methods Question 2 Explain how economic order quantity can be calculated

Electrical ice protection systems, Electrical ice protection systems: E...

Electrical ice protection systems: Electrical ice protection systems are used on most turbo-props.  Resistance wire heater elements are embedded in rubber and cemented from the

MICROPROCESSOR, The access time of ROM using bipolar transistors is about

The access time of ROM using bipolar transistors is about

Introduction to Corporate Finance, Calculatethe tax disadvantage to organiz...

Calculatethe tax disadvantage to organizing a U.S. business today, after passage of the Jobs and growth Tax relief reconciliation act of 2003, as a corporation versus a partnership

Inlet duct arrangement in aircraft engine, Inlet duct arrangement in Aircra...

Inlet duct arrangement in Aircraft Engine: Wherever the APU is located, ducting will be required to bring air to the APU inlet. In figure 18.9. we can see that the inlet duct

What are the elements limiting higher data rate in networks, Question: ...

Question: (a) What are the elements limiting high data rate in cellular networks? (b) Describe the following characteristics of 4G mobile networks: - Always on - RAN A

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