Video: Dab tsi yog 4 yam khoom ntawm ib qho khoom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Muaj plaub ntau hom crystalline cov khoom khib nyiab : molecular cov khoom khib nyiab , network cov khoom khib nyiab , ionic cov khoom khib nyiab , thiab metallic cov khoom khib nyiab . A cov khoom atomic-theem qauv thiab muaj pes tsawg leeg txiav txim siab ntau ntawm nws macroscopic khoom , suav nrog, rau Piv txwv li, hluav taws xob thiab tshav kub conductivity, ntom, thiab solubility.
Ib yam li ntawd, cov khoom ntawm cov khoom yog dab tsi?
Cov khoom ntawm Solids. Khoom yog cov yam ntxwv ntawm cov qauv rigidity thiab tsis kam mus rau kev hloov ntawm cov duab los yog ntim. Tsis zoo li kua, a khov kho yam khoom tsis ntws mus rau hauv cov duab ntawm nws lub thawv, thiab tsis nthuav mus sau tag nrho cov ntim uas muaj rau nws zoo li roj.
Tsis tas li ntawd, tsib lub zog ntawm cov khoom yog dab tsi? Sau tsib yam ntxwv ntawm cov khoom, kua, thiab gases.
- cov khoom muaj qhov ruaj khov thiab lub ntim ruaj khov.
- khoom tsis tuaj yeem compressed.
- cov khoom muaj qhov ntom ntom ntom ntom.
- quab yuam ntawm attraction ntawm cov hais yog heev muaj zog.
- Qhov chaw nruab nrab ntawm cov khoom khib nyiab yog negligible.
Ib yam li ntawd, 6 lub zog ntawm cov khib nyiab yog dab tsi?
Cov duab meej, meej ntim , meej melting point, siab ceev, incompressibility, thiab tsawg diffusion.
Dab tsi yog lub cev tseem ceeb ntawm cov khoom khib nyiab?
Hauv cov khoom, cov molecules tau ntim ua ke, thiab nws khaws nws puab . Cov kua ua kua puab ntawm lub thawv. Roj nthuav tawm kom puv lub thawv. Khoom yog ib qho ntawm peb lub xeev tseem ceeb ntawm teeb meem , nrog ua kua thiab gas.
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 thawj kauj ruam ntawm kev tsim ib qho perpendicular los ntawm ib qho taw tes mus rau kab?
Txuas tus taw tes rau qhov taw tes uas cov arcs sib tshuam. Siv ib tug straightedge los xyuas kom meej cov kab yog ncaj. Txoj kab koj kos yog perpendicular rau thawj kab, los ntawm qhov muab taw tes rau ntawm kab
Dab tsi yog qhov flux los ntawm lub voos xwmfab ntawm sab yog tias tus nqi ntawm Q yog ntawm ib qho ntawm nws lub ces kaum?
Raws li peb paub tias, tag nrho cov flux los ntawm tus nqi q yog q / ε 0 (Gauss txoj cai). Yog hais tias tus nqi yog nyob rau ntawm lub ces kaum ntawm lub voos xwmfab, ib co ntawm cov flux nkag mus rau hauv lub voos xwmfab thiab tawm los ntawm ib co ntawm nws lub ntsej muag. Tab sis qee qhov flux tsis nkag mus rau hauv lub voos xwmfab. Qhov 1/8th no yuav muab faib ua 3 ntu dua
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