Nws yog xim hlau thiab tsis-metallic zog: cov lus raws li ib daim ntawv qhia

Lub tswvyim ntawm "co" tag nrho kuv tus kheej lawm sawv cev. Hlau, nyiaj, kub, tooj liab, txhuas. Cov npe muaj nyob rau hauv cov xov xwm lossi, yog li ob peb cov neeg yuav tsum tau nug cov lus nug txog dab tsi hlau. Tseem, nws yuav tsis ua mob kom paub txog dab tsi lub co los ntawm lub standpoint ntawm lub chemist thiab physicist, Yog hais tias koj xav kom nyob rau hauv lub siab lub system saib ntawm lub ntiaj teb no. Thiab raws li rau qhov tiav ntawm kev txawj ntse ntawm cov ntawv no yuav tsis ua mob kom paub txog lwm pab pawg - uas tsis yog-hlau thiab metalloids. Yuav ua li cas yog cov hlau thiab tsis-metallic zog?

Yog hais tias lub cim xeeb yog summed

Tsis-co zoo li ntau mysterious, tshwj xeeb tshaj yog rau cov neeg uas tsis nco qab lub tsev kawm ntawv Science News for KIDS, yog li mloog zoo rau lub thaj chaw uas tsis yog-nws yog xim hlau thiab nws yog xim hlau, ntsig txog, yuav tsum tau kev raws li cov lus rov. Qhov tseeb hais tias koj tsis nco qab, yog tsis muaj kev txaj muag, cov tib neeg lub hlwb yog qhov nyuaj heev kom cov ntaub ntawv nyob rau hauv lub siab hais tias yuav tsis tau txhua txhua hnub. Yog li ntawd, peb sau cov khoom uas tsis yog-nws yog xim hlau thiab tawm tswv yim rau lawv, yuav ua rau nws ntau to taub.

Tsis muaj cua sov, tsis muaj hluav taws xob

Tsis-co zuj zus co kev hluav taws xob thiab tshav kub. Yog li ntawd, tej hub mug, firstly, tuas thaum tshav kub kub zoo tshaj hlau, thiab tib ob, tau mus hlawv koj txhais tes rau ntawm ib tug mug ntawm ntau tshaj ib tug tub rog lub hlau mug. Thiab nco ntsoov, kev ruaj ntseg rub tawm los ntawm lub hauv paus ntawm lub cov neeg yuav ua tsis tau tam sim no nrog hlau tej khoom. Tab sis tsob ntoo yuav siv tau, cov pa roj carbon nyob rau hauv cov ntoo - nonmetal. Cov cuab yeej ntawm hlau - mus ua tam sim no zoo nws yog xim hlau zog muaj xws li tsis muaj conductivity.

Fragility los yog plasticity

Ntshiab tshuaj los ntawm uas tsis yog-hlau feem ntau nkig los yog feem ntau feem ntau muaj nyob rau hauv lub khoom hauv lub xeev nyob rau hauv cov hmoov daim ntawv no. Hlau forging, yuav los ntawm kub, cov cuab yeej thiab cov feem ntau txawv txawv khov daim ntawv (siv no zoo nyob rau hauv lub foundry ua lag ua luam). Tsis-co tsis tiav. Tsis-co feem ntau, txawm yog hais tias lawv tshwm sim nyob rau hauv daim ntawv ntawm daim, koj tseem muaj ib tug uas tsis muaj kev ceev thiab feem ntau nyob rau hauv daim ntawv ntawm cov ntxeem tau.

Rooj raws li ib daim ntawv qhia ntawm lub cheeb tsam

Yog hais tias koj "mus" rau lub periodic rooj ntawm sab laug mus rau sab xis, koj yuav pom tias qhov uas tsis yog-metallic khoom no kho kom zoo ntawm sab laug mus rau sab xis. Helium - qhov loj tshaj plaws "Zoo heev uas tsis yog-hlau." Tab sis, yog hais tias koj mus rau hauv qab rooj, lub nws yog xim hlau thaj chaw ntawm fading. Co kuj ua ntau txhoj puab heev li koj nqis los rau nram lub periodic rooj. Yog li, lub periodic rooj yuav roughly xav tias cov khoom ntawm tej yam yooj yim tshuaj, muaj atoms ntawm kev hais. Substance "nyob rau hauv nruab nrab" yog hu ua metalloids thiab siv nquag nyob rau hauv hluav taws xob engineering raws li semiconductors.

Cov kev siv uas tsis yog-hlau

General tau rau tag nrho cov uas tsis yog-hlau ua tsis tau. Nyias muaj nyias tus "specialization", raws li uas tsis yog-metallic cov ntaub ntawv - sib txawv. Inert gases yog siv rau sab nraum zoov advertising, selenium - rau toners nyob rau hauv lub printing kev lag luam, sulfur yog nyob rau hauv lub match. Peb lossi raug nyob rau hauv lawv lub neej txhua hnub nrog rau cov ntaub ntawv, uas muaj xws li uas tsis yog-hlau derivatives.

Yog li, qhov uas tsis yog-metallic zog, zoo li hlau, yuav kwv yees los ntawm cov periodic rooj. Thiab cov qauv yog heev nthuav, vim hais tias cov rooj muag khoom noj yog tseem muaj ntau undiscovered secrets uas pab zaum saib deb rau yav tag los, thiab tau nyob rau hauv lub neej yav tom ntej. Tshwj xeeb tshaj yog xav nyob rau hauv lub neej yav tom ntej ntawm metalloid.