Ib yam khoom uas muaj tib hom atom lossis ib hom molecule yog cov khoom ntshiab. Feem ntau ntawm cov teeb meem nyob ib puag ncig peb, txawm li cas los xij, muaj cov khoom sib xyaw ntawm cov khoom ntshiab. Huab cua, ntoo, pob zeb thiab av yog piv txwv ntawm cov khoom sib tov.
Qhov piv txwv ntawm cov teeb meem twg raug cais raws li kev sib xyaw?
Piv txwv li, dej kais dej yuav muaj me me ntawm cov tshuaj sodium chloride yaj thiab cov tshuaj uas muaj hlau, calcium, thiab ntau lwm yam tshuaj. Cov dej ntshiab huv yog cov khoom siv, tab sis seawater, vim nws muaj ions thiab complex molecules, yog sib tov.
Tus qauv twg yog qhov piv txwv ntawm kev sib xyaw?
Piv txwv ntawm cov khoom sib xyaw suav nrog ntshav, mis nyuj, ntsev thiab dej, xuab zeb thiab dej, thiab lwm yam. Cov khoom sib xyaw tuaj yeem ua homogeneous lossis heterogeneous raws li kev faib tawm ntawm lawv cov khoom siv. Yog hais tias muaj ib tug txawm faib ntawm constituent hais, qhov sib tov yog homogeneous. Piv txwv li, sib tov ntsev thiab dej.
Koj qhia li cas yog qhov piv txwv ntawm qhov teeb meem yog sib xyaw?
Yog tias cov khoom tuaj yeem muab cais ua nws cov ntsiab lus, nws yog qhov sib xyaw. Yog hais tias ib yam khoom tsis yog tshuaj dawb huv, nws yog ib qho sib xyaw heterogeneous lossis homogeneous sib xyaw. Yog hais tias nws muaj pes tsawg leeg tsis sib xws, nws yog homogeneous sib xyaw.
Dab tsi yog qhov sib xyaw?
Ib qho sib xyaw yog khoom siv ua los ntawm ob lossis ntau yam khoom sib txawv, uas yog sib xyawtab sis tsis ua ke chemical. Kev sib tov yog hais txog kev sib xyaw ntawm lub cev ntawm ob lossis ntau yam khoom uas khaws cia cov cim ntawm tus kheej.
