Video: Yam khoom twg ua rau hluav taws xob hauv ob qho tib si khoom thiab molten?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov delocalized electrons muaj nyob rau hauv ob leeg a solid thiab molten lub xeev Yog li, sodium tuaj yeem ua hluav taws xob hauv ob lub xeev . Sodium iodide yog heteroatomic, thiab electronegativity sib txawv ntawm sodium thiab iodide ua rau lawv cov nyiaj ionic. Ionic compounds tsim qhov hu ua crystal lattice qauv.
Tom qab ntawd, ib tug kuj yuav nug, cov khoom twg yuav ua tau hluav taws xob nyob rau hauv ob qho tib si khoom thiab kua theem?
Txij li cov ions tsis tuaj yeem txav mus, ionic cov khoom khib nyiab yog non-conductors hluav taws xob . Thaum lub khov kho yog melted rau ib ua kua Txawm li cas los xij, cov ions yog dawb rau kev tsiv teb tsaws. Yog li ntawd, ionic kua yog cov conductors zoo hluav taws xob tam sim no. Conductor yog ib yam khoom muaj peev xwm kis tau hluav taws xob thiab/los yog cua sov.
Tsis tas li ntawd, cov tshuaj dab tsi tuaj yeem ua hluav taws xob thaum muaj zog? Tag nrho khov kho hlau muaj qee yam khoom siv hluav taws xob nrog kub thiab tooj liab yog qee qhov zoo tshaj plaws. Qee cov ntaub ntawv tseem ceeb uas tsis yog xim hlau ua tau kuj ua hluav taws xob hauv khov kho daim ntawv, xws li graphite thiab silicon. Cov tshuaj ntawm cov hlau ua tsis yog ua hluav taws xob as a khov kho , tab sis hlau yog zoo conductors ntawm hluav taws xob.
Ntxiv mus, vim li cas cov hlau ua hluav taws xob nyob rau hauv ob qho tib si khoom thiab cov kua hauv lub xeev?
Cov electrons hauv a hlau yog mobile hauv ob leeg tus solid thiab liquid states . Nyob rau hauv ntsev, cov ions yog immobile nyob rau hauv lub khov kho crystalline daim ntawv. Hlau yuav ua hluav taws xob hauv ib qho khov kho los yog kua lub xeev . Tsis tas li ntawd, ionic compounds xws li ntsev, uas ua tsis yog ua hluav taws xob hauv lawv solid state yuav kev coj thaum yaj.
Cov hlau puas tuaj yeem ua hluav taws xob hauv lub xeev molten?
Molten hlau ua tsis yog ib txwm coj zoo ib yam li lawv cov khoom xeev . Hais tias, hluav taws xob conductive hlau tseem ua hluav taws xob thaum molten tab sis lawv ua resistant ntau dua li qhov kub thiab txias.
Pom zoo:
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