Video: Dab tsi yog 3 hom crystalline solids?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Crystalline solids muaj kev rov ua dua, peb -dimensional qauv los yog lattices ntawm molecules, ions los yog atoms. Cov khoom no nyiam ua kom qhov chaw uas lawv nyob, tsim khov kho , yuav luag incompressible lug. Muaj peb lub ntsiab hom crystalline solids : molecular, ionic thiab atomic.
Tib neeg kuj nug, dab tsi yog peb hom crystalline qauv?
Muaj xya lub ntsiab cov qauv ntawm siv lead ua , nyob ntawm qhov zoo ntawm cov siv lead ua . Cov no yog cubic, hexagonal, tetragonal, orthorhombic, trigonal, monoclinic, thiab triclinic.
Yam khoom twg yog caco3? Ionic Khoom (Wikipedia Link) Vim hais tias cov electrons tau tuav nruj los ntawm cov ions tsis zoo, cov no cov khoom khib nyiab tsis txhob ua hluav taws xob. Lawv soluble vim lawv yog ua los ntawm ions, thiab yog li yooj yim yaj los ntawm polar dej molecules. Piv txwv xws li sodium chloride (lub rooj ntsev) thiab calcium carbonate (chalk).
Tsis tas li ntawd paub, hom crystalline khoom yog hlau?
Properties of Solids
| Hom Khoom | Hom Particles | Piv txwv |
|---|---|---|
| ionic | ions | NaCl, Al2O3 |
| nws yog xim hlau | atoms ntawm electropositive ntsiab | Cu, Fe, Ti, Pb, U |
| covalent network | atoms ntawm electronegative ntsiab | C (pob zeb diamond), SiO2, SiC |
| molecular | molecules (los yog atoms) | H2O, CO2, kuv2, C12H22O11 |
Puas yog crystals nyob?
Nws yog (Yuav luag) ciaj sia! Cov kws tshawb fawb tsim ib qho ze- Nyob Crystal . Tawm rau lub teeb thiab pub los ntawm cov tshuaj, lawv tsim siv lead ua uas txav, sib cais thiab tsim dua. "Muaj qhov tsis meej pem hauv ntej ntawm kev ua haujlwm thiab muaj sia," hais tias biophysicist Jérémie Palacci ntawm New York University.
Pom zoo:
Dab tsi yog qhov txawv ntawm molecular solids thiab covalent solids?
Molecular solids - Ua los ntawm atoms ormolecules tuav ua ke los ntawm London dispersion rog, dipole-dipoleforces, los yog hydrogen bonds. Ib qho piv txwv ntawm molecular solidis sucrose. Covalent-network (tseem hu ua atomic) cov khoom-ua los ntawm cov atoms txuas nrog covalentbonds; cov intermolecular rog yog covalent bonds thiab
Dab tsi yog qhov txawv ntawm crystalline thiab non crystalline candies?
Muaj ob pawg sib txawv uas cov khoom qab zib tuaj yeem raug cais raws li: crystalline thiab non-crystalline. Crystalline khoom qab zib muaj xws li fudge thiab fondant, whereas noncrystalline khoom qab zib muaj lollipops, toffee, thiab caramel
Cov khoom qab zib uas tsis yog crystalline yog dab tsi?
Cov khoom qab zib noncrystalline, xws li cov khoom qab zib nyuaj, caramel, toffees, thiab nougats, yog chewy los yog tawv, nrog cov qauv homogeneous. Crystalline candies, xws li fondant thiab fudge, yog du, creamy, thiab chewed yooj yim, nrog ib tug meej qauv ntawm cov muaju me me
Dab tsi yog qhov sib txawv ntawm crystalline solids?
Cov chav kawm ntawm Crystalline Solids. Cov khoom siv crystalline tuaj yeem piav qhia los ntawm hom ntawm cov khoom hauv lawv thiab hom tshuaj sib txuas uas tshwm sim ntawm cov khoom. Muaj plaub hom crystals: (1) ionic, (2) metallic, (3) covalent network, thiab (4) molecular
Dab tsi yog junk DNA thiab nws lub hom phiaj yog dab tsi?
Hauv cov noob caj noob ces, lo lus khib nyiab DNA hais txog thaj tsam ntawm DNA uas tsis yog coding. Qee qhov DNA noncoding no yog siv los tsim cov khoom tsis yog RNA xws li hloov RNA, tswj RNA thiab ribosomal RNA