Video: Yam khoom dab tsi yog silicon?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Silicon yog tshuaj keeb nrog lub cim Si thiab atomic tooj 14. Nws yog ib qho nyuaj, nkig crystalline khoom nrog xiav-grey metallic lustre, thiab yog tetravalent metalloid thiab semiconductor. Nws yog ib tug tswv cuab ntawm pawg 14 nyob rau hauv lub periodic rooj: carbon yog saum toj no nws; thiab germanium, tin, thiab txhuas nyob hauv qab nws.
Tsis tas li ntawd, puas yog silicon hlau lossis nonmetal?
Silicon lub semiconductor Silicon tsis yog hlau tsis yog tsis yog hlau ; Nws yog ib qho metalloid, ib lub caij uas ntog qhov chaw ntawm ob. Cov qeb ntawm metalloids yog ib yam ntawm ib cheeb tsam grey, tsis muaj lub ntsiab txhais ntawm qhov haum rau daim nqi, tab sis metalloids feem ntau muaj cov khoom ntawm ob qho tib si. hlau thiab tsis- hlau.
Kuj Paub, dab tsi yog silicon siv hauv? Silicon yog ib qho ntawm cov neeg muaj txiaj ntsig zoo tshaj plaws. Nyob rau hauv daim ntawv ntawm xuab zeb thiab av nplaum nws yog siv ua pob zeb thiab cib; Nws yog cov khoom siv refractory muaj txiaj ntsig rau kev ua haujlwm kub, thiab nyob rau hauv daim ntawv ntawm silicates nws yog siv hauv ua enamels, pottery, thiab lwm yam.
Ntawm no, yog Silicon yog ib qho khoom lossis cov khoom sib xyaw?
Silicon yeej tsis tshwm sim li dawb keeb nyob rau hauv qhov. Nws ib txwm tshwm sim raws li ib tug compound nrog oxygen, magnesium, calcium, phosphorus, lossis lwm yam cov ntsiab lus . Feem ntau cov minerals yog cov uas muaj silicon dioxide nyob rau hauv ib daim ntawv los yog lwm yam. Cov no yog hu ua silicates.
Leej twg nrhiav tau lub caij silicon?
Jöns Jacob Berzelius Antoine Lavoisier
Pom zoo:
Dab tsi yog 5 yam khoom ntawm cov khoom?
Cov khoom uas pom tau tias tuaj yeem tshawb pom nrog tsib qhov kev xav muaj xws li cov duab, xim, kev ntxhib los mos, hardness, luster, buoyancy, tsw, thiab saj. Cov khoom ntsuas muaj xws li qhov loj, ntim, qhov hnyav, qhov hnyav, qhov ntom, thiab qhov kub thiab txias
Yuav ua li cas koj thiaj paub tias ib yam dab tsi yog ib yam khoom dawb huv los yog sib tov?
1. Cov tshuaj dawb huv tsis tuaj yeem muab cais ua lwm yam teeb meem, thaum sib xyaw yog sib xyaw ntawm ob lossis ntau dua cov khoom ntshiab. 2. Cov khoom ntshiab muaj lub cev tsis tu ncua thiab tshuaj lom neeg, thaum cov khoom sib xyaw muaj qhov sib txawv ntawm lub cev thiab tshuaj lom neeg (piv txwv li, qhov kub thiab txias)
Dab tsi yog 4 yam khoom ntawm ib qho khoom?
Muaj plaub hom crystalline solids: molecular solids, network solids, ionic solids, thiab metallic solids. Ib qho khoom ntawm cov qauv atomic-theem thiab muaj pes tsawg leeg txiav txim siab ntau yam ntawm nws cov khoom macroscopic, xws li, piv txwv li, hluav taws xob thiab hluav taws xob conductivity, ntom, thiab solubility
Cov khoom twg yog cov piv txwv ntawm cov khoom siv tshuaj xyuas txhua yam uas siv?
Piv txwv ntawm cov khoom siv tshuaj muaj xws li flammability, toxicity, acidity, reactivity (ntau hom), thiab kub ntawm combustion. Hlau, piv txwv li, ua ke nrog oxygen nyob rau hauv lub xub ntiag ntawm dej los ua xeb; chromium tsis oxidize (Daim duab 2)
Yam dab tsi ntawm cov dej zoo tshaj plaws piav qhia nws lub peev xwm los yaj ntau yam khoom siv?
Vim tias nws cov polarity thiab muaj peev xwm tsim cov ntawv cog lus hydrogen, dej ua rau cov kuab tshuaj zoo heev, txhais tau tias nws tuaj yeem yaj ntau hom molecules