Video: Ib co piv txwv ntawm crystals yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Piv txwv ntawm cov ntaub ntawv niaj hnub koj ntsib raws li cov muaju rooj ntsev ( sodium chloride los yog halite crystals), qab zib (sucrose), thiab snowflakes. Ntau pob zeb diamond yog crystals, suav nrog quartz thiab pob zeb diamond . Kuj tseem muaj ntau cov ntaub ntawv uas zoo li cov muaju, tab sis qhov tseeb yog polycrystals.
Raws li txoj cai, 7 hom crystals yog dab tsi?
Muaj xya lub ntsiab qauv ntawm cov muaju, nyob ntawm seb cov duab ntawm cov siv lead ua. Cov no yog cubic, hexagonal , tetragonal , orthorhombic , trigonal , monoclinic , thiab triclinic.
Kuj Paub, dab tsi yog siv lead ua ntau tshaj? Quartz
Ntawm no, dab tsi yog suav hais tias yog siv lead ua?
A siv lead ua los yog crystalline khoom yog ib yam khoom uas nws cov khoom (xws li atoms, molecules, los yog ions) yog teem nyob rau hauv ib tug heev txiav txim microscopic qauv, tsim ib tug siv lead ua lattice uas txuas mus rau txhua qhov chaw. Txoj kev tshawb fawb ntawm siv lead ua thiab siv lead ua kev tsim yog hu ua crystallography.
Dab tsi yog crystals ua los ntawm?
A siv lead ua yog ua los ntawm atoms ntawm tib lub caij los yog atoms ntawm cov ntsiab lus sib txawv [xws li silica (Si) los yog calcium (Ca)], thiab cov atoms muaj ib txwm, rov ua dua. Crystals yog heev txiav txim, qhov kev npaj ntawm ib tug tej yam siv lead ua yeej ib txwm zoo ib yam.
Pom zoo:
Dab tsi yog qhov sib piv thiab piv txwv?
Inverse proportion. Inverse proportions tshwm sim thaum ib tus nqi nce thiab qhov txo qis. Piv txwv li, ntau tus neeg ua haujlwm ntawm txoj haujlwm yuav txo lub sijhawm los ua kom tiav cov haujlwm. Lawv yog inversely proportional
Thaum lub ntim ntawm ib qho piv txwv ntawm cov pa roj yog txo lub siab ntawm cov qauv ntawm cov pa roj?
Kev txo qis Cov pa roj sib xyaw txoj cai hais tias lub siab ntawm cov pa roj yog inversely cuam tshuam nrog lub ntim thiab ncaj qha ntsig txog qhov kub thiab txias. Yog tias qhov kub thiab txias yog nyob tas li, qhov sib npaug raug txo rau Boyle txoj cai. Yog li ntawd, yog tias koj txo qhov siab ntawm cov roj av tas li, nws qhov ntim yuav nce ntxiv
Dab tsi yog txhais los ntawm lub sij hawm dissociation thiab dab tsi yog ib qho piv txwv ntawm cov khoom uas dissociates?
Dissociation, nyob rau hauv chemistry, sib cais ntawm ib yam khoom mus rau hauv atoms los yog ions. Thermal dissociation tshwm sim ntawm qhov kub thiab txias. Piv txwv li, hydrogen molecules (H 2) dissociate rau hauv atoms (H) ntawm kub heev; ntawm 5,000 ° K txog 95% ntawm cov molecules hauv cov qauv ntawm hydrogen yog dissociated rau hauv atoms
Dab tsi yog qhov txawv ntawm instantaneous thiab nruab nrab ceev dab tsi yog qhov piv txwv loj tshaj ntawm kev ceev ceev?
Qhov nruab nrab ceev yog qhov ceev nruab nrab ntawm lub sijhawm. Instantaneous ceev yuav yog qhov ceev txhua qhov muab tam sim ntawd hauv lub sijhawm ntawd, ntsuas nrog lub ntsuas ntsuas lub sijhawm
Dab tsi yog qhov txawv ntawm microevolution thiab macroevolution Dab tsi yog qee qhov piv txwv ntawm txhua tus?
Microevolution vs. Macroevolution. Piv txwv ntawm cov kev hloov microevolutionary no yuav suav nrog kev hloov ntawm hom xim lossis loj. Macroevolution, piv txwv li, yog siv los hais txog kev hloov pauv ntawm cov kab mob uas tseem ceeb txaus uas, dhau sijhawm, cov kab mob tshiab yuav raug suav tias yog hom tshiab nkaus xwb