Kev sib xyaw tuaj yeem sib cais los ntawm lub cev txhais tau tias Txhua qhov sib xyaw , txawm tias homogeneous lossis heterogeneous, sib koom ib qho khoom sib xws: Lawv tuaj yeem muab cais ua ntau hom teeb meem hom teeb meem hauv physics, ib lub xeev ntawm teeb meem yog ib qho ntawm cov ntaub ntawv uas muaj teeb meem. Plaub lub xeev ntawm cov teeb meem yog pom tau hauv lub neej niaj hnub: khoom, kua, roj, thiab ntshav. … Cov teeb meem hauv lub xeev ua kua tswj lub ntim ruaj khov, tab sis muaj qhov sib txawv ntawm cov duab uas hloov tau kom haum nws lub thawv. https://en.wikipedia.org › wiki › State_of_matter
State of matter - Wikipedia
los ntawm lub cev txhais tau tias xws li kev cais, lim, cua sov, lossis txias.
Yuav ua li cas sib xyaw ua ke sib cais ntawm lub cev?
Ib qho sib xyaw ua ke yog kev sib xyaw ntawm ob lossis ntau yam tshuaj lom neeg (cov ntsiab lus lossis cov khoom sib txuas), qhov sib txawv ntawm cov khoom tuaj yeem pom qhov txawv thiab yooj yim cais los ntawm lub cev txhais tau tias.
Puas yog homogeneous sib tov sib cais los ntawm lub cev txhais tau tias?
Homogeneous mixs (cov kev daws teeb meem) tuaj yeem sib cais rau hauv lawv cov tshuaj tiv thaiv los ntawm cov txheej txheem lub cev uas vam khom qhov sib txawv ntawm qee qhov khoom ntawm lub cev, xws li qhov sib txawv ntawm lawv cov ntsiab lus kub. Ob txoj kev sib cais no yog distillation thiab crystallization.
Yuav ua li cas cais qhov sib xyaw ua ke?
Centrifugation taukuj tseem siv tau los cais cov khoom. Lim cov sib tov los ntawm ntau cov txheej lim (lossis sieves) tuaj yeem cais tawm ntau yam khoom. Cov txheej txheem flotation yog lwm txoj kev xaiv. Vam tias qhov no yuav pab tau.
Yuav ua li cas cais tau los ntawm lub cev txhais tau tias?
Cov khoom sib xyaw ntawm cov khoom sib xyaw tuaj yeem sib cais los ntawm lub cev txhais tau li pom, evaporation, sublimation thiab sib nqus sib nqus. Nyob rau hauv kev npaj ntawm ib tug sib tov, lub zog tsis yog evolved los yog absorbed.
