Difference Between Crystalline and Amorphous : The NEET syllabus is vast, it includes topics like Difference Between Crystalline and Amorphous. Crystalline substances boast highly ordered atomic arrangements, exemplified by materials like quartz with distinct repeating patterns.
While in amorphous substances there are no such patterns found, as seen in materials like glass. This knowledge is important for aspiring medical professionals because it ensures to building of a foundational grasp of the diverse molecular structures encountered in the biochemistry syllabus.Difference Between Crystalline and Amorphous | ||
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Parameters | Crystalline | Amorphous |
Structure | Highly ordered, repeating pattern | Random arrangement without long-range order |
Melting Point | Sharp and well-defined | Gradual, over a range |
Transparency | May be transparent or opaque, depending on the substance | Typically translucent or transparent, but can also be opaque |
Cleavage | Exhibits cleavage planes | Lacks cleavage planes |
Breakage Pattern | Breaks along definite planes | Irregular breakage pattern |
Examples | Diamonds, table salt (NaCl) | Glass, rubber, plastics |
Heat of Fusion | Sharp melting point corresponds to a specific heat of fusion | Gradual softening without a specific heat of fusion |
Repeatability | Reproducible X-ray diffraction pattern | Lacks a definite X-ray diffraction pattern |
Order | Long-range order in the atomic/molecular arrangement | Short-range orders, with a lack of long-range order |
Examples in Nature | Quartz, ice | Glass, rubber |
Example : Table salt (NaCl) forms cubic crystals with well-defined edges and faces due to its ordered arrangement of sodium and chloride ions.
Example : Glass is an amorphous solid formed when molten silica cools rapidly, resulting in a random arrangement of atoms without any long-range order.
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