Video: Dab tsi yog qhov txawv ntawm amorphous thiab crystalline?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Crystalline Cov khib nyiab muaj cov duab meej nrog cov txheej txheem ions, molecules lossis atoms hauv a peb-dimensional qauv feem ntau hu ua siv lead ua lattice. Crystalline Cheebtsam yog tuav ua ke los ntawm uniform intermolecular rog whereas nyob rau hauv amorphous solids cov rog no txawv ntawm ib lub atom mus rau lwm qhov.
Yog li ntawd, dab tsi yog amorphous thiab crystalline?
Nyob rau hauv condensed teeb meem physics thiab cov ntaub ntawv science, ib amorphous (los ntawm Greek a, tsis muaj, morphé, shape, form) lossis tsis yog- crystalline khoom yog ib qho khoom uas tsis muaj qhov kev txiav txim ntev ntev uas yog tus yam ntxwv ntawm a siv lead ua . Hauv qee phau ntawv qub, lo lus tau siv los ua ke nrog iav. Polymers yog feem ntau amorphous.
Dab tsi yog qhov txawv ntawm crystalline thiab tsis crystalline? Qhov yooj yim tshaj plaws qhov sib txawv ntawm crystalline khoom thiab noncrystalline Solids (NCS) yog qhov kev txiav txim ntev ntev hauv Kev faib tawm ntawm atoms (ions) lossis molecules tshwm sim hauv thawj rooj plaub tab sis tsis yog hauv thib ob.
Ua ke, yog ntoo crystalline lossis amorphous?
Crystalline cov khoom muaj xws li pob zeb, ntoo , ntawv thiab paj rwb. Cov khib nyiab no yog tsim los ntawm cov atoms uas tau teem rau hauv cov qauv tseeb. Thaum twg crystalline Cov khib nyiab yog rhuab, hloov mus rau cov kua, hu ua melting, yog ntse thiab meej. Amorphous cov khoom muaj xws li roj hmab, iav thiab sulfur.
Puas yog pob zeb diamond yog crystalline lossis amorphous khoom?
Piv txwv li, pob zeb diamond thiab graphite yog ob crystalline daim ntawv ntawm carbon, thaum amorphous carbon yog ib daim ntawv noncrystalline. Polymorphs, txawm tias muaj tib lub atoms, tej zaum yuav muaj cov khoom sib txawv wildly. Piv txwv li, pob zeb diamond yog ib qho ntawm cov khoom nyuaj tshaj plaws paub, thaum graphite yog mos heev uas nws yog siv los ua roj nplua nyeem.
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