Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
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.
I have assignments to due and I''m wondering if you could do it for me
When light of frequency greater than threshold frequency fall on a metal surface, electrons are emitted out from metal surface this effect is known as photoelectric effect. Laws
darlington pair assignment
what are wavefronts and how are they useful in the field of optics and medicine?
Wing design for a sports glider The justification of the aerofoil selection with appropriate data, based on tunnel work or computational analysis. Sizing of the wing in
AIRCRAFT WEIGHT AND BALANCE - Reference BCAR A5-4 or JAR-25.23 -29 After an aircraft has been constructed, painted and can be said to be ‘representative of its true empty (or
Why low carbon steel can not be quench hardened?
compare conventional lagoon,aerated lagoon and activated sludge process,including process flow diagrams and hydraulic retention timesquestion #Minimum 100 words accepted#
suitable cement for adequate building
Aircraft fuel gauges Fuel gauge senders are capacitor transducers that consist of concentric tubular electrodes from top to bottom of the tank. They are distributed at various
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd