graphite, tseem hu ua plumbago lossis dub txhuas, ntxhia muaj carbon. Graphite muaj cov txheej txheem txheej uas muaj rings ntawm rau carbon atoms teem nyob rau hauv dav spaced kab rov tav nplooj.
Dab tsi graphite muaj?
Graphite yog ib daim ntawv ntawm cov pa roj carbon nyob rau hauv uas cov pa roj carbon atoms tsim covalent bonds nrog peb lwm cov pa roj carbon atom. Qhov no txhais tau hais tias txhua cov pa roj carbon atom muaj 'spare' electron (raws li cov pa roj carbon muaj plaub txheej electrons) uas yog delocalised ntawm cov khaubncaws sab nraud povtseg ntawm carbon atoms.
Puas yog graphite ua lawm?
Graphite Ua li cas? Graphite tuaj yeem pom ib txwm muajlossis tuaj yeem tsim ua hluavtaws. Ib txwm tshwm sim deposits ntawm graphite (tsim los ntawm ib tug ua ke ntawm igneous thiab metamorphic lub cev txheej txheem) yog mined nyob rau hauv ntau lub teb chaws, xws li Tuam Tshoj, Madagascar, Brazil thiab Canada.
Dab tsi yog graphite ua los ntawm?
Ntshiab graphite yog mineral daim ntawv ntawm cov khoom carbon (element 6, cim C). Nws tsim raws li cov hlab ntsha thiab nthuav tawm hauv cov pob zeb metamorphic raws li qhov tshwm sim ntawm metamorphism ntawm cov khoom siv organic suav nrog hauv limestone deposits.
Kev sib txheeb ntawm pob zeb diamond thiab graphite yog dab tsi?
Pob zeb diamond thiab tseem graphite yog tshuaj tib yam, ob qho tib si ua los ntawm cov ntsiab lus carbon, txawm li cas los xij, lawv muaj qhov sib txawv kiag li atomic thiab cov qauv siv lead ua.
