Kev Sib Tw vs Kev Sib Tw
Cov khoom muaj nyob ua ke los ntawm kev sib cuam tshuam hauv cov molecular thiab intermolecular. Cov zog no muaj zog sib txawv. Kev sib cais thiab kev sib cais yog ob txoj hauv kev uas cov kev sib cuam tshuam ntawm molecular tuaj yeem cuam tshuam thiab qee zaum muaj kev cuam tshuam tshiab.
Kev tsis sib haum
Kev sib cais yog txheej txheem ntawm kev ua kom cov khoom nyob hauv cov kuab tshuaj. Cov khoom no tuaj yeem nyob hauv cov khoom, roj lossis kua theem. Qhov tshwm sim ntawm dissolution yog ib qho hnyav. Lub Cheebtsam ntawm kev daws yog feem ntau ntawm ob hom, cov kuab tshuaj thiab cov kuab tshuaj. Solvent dissolves lub solutes thiab tsim ib qho kev daws teeb meem. Yog li, feem ntau cov kuab tshuaj yog siab dua li cov kuab tshuaj. Thaum dissolving, lub solute yog tawg mus rau hauv molecular, atomic, los yog ionic theem, thiab cov hom disperse nyob rau hauv cov kuab tshuaj. Tag nrho cov khoom hauv cov tshuaj muaj qhov loj ntawm cov molecule lossis ib qho ion, yog li lawv tsis tuaj yeem pom los ntawm qhov muag liab qab. Cov kev daws teeb meem tuaj yeem muaj xim yog tias cov kuab tshuaj los yog cov kuab tshuaj tuaj yeem nqus pom lub teeb. Txawm li cas los xij, cov kev daws teeb meem feem ntau yog pob tshab. Cov kuab tshuaj tuaj yeem nyob hauv cov kua, gaseous lossis cov khoom hauv lub xeev. Cov kuab tshuaj feem ntau yog kua. Ntawm cov kua, dej yog suav tias yog cov kuab tshuaj universal, vim tias nws tuaj yeem yaj ntau yam ntau dua li lwm cov kuab tshuaj. Gas, khoom los yog lwm yam kua solute yuav yaj nyob rau hauv cov kua solvents. Hauv cov kuab tshuaj roj, tsuas yog cov kua roj ntsha tuaj yeem yaj. Muaj ib qho kev txwv rau tus nqi ntawm cov kuab tshuaj uas tuaj yeem muab ntxiv rau qee yam ntawm cov kuab tshuaj.
Rau qhov kev sib cais yuav tshwm sim, cov kuab tshuaj thiab cov kuab tshuaj yuav tsum sib haum. Peb hais qhov no li zoo li dissolves nyiam.” Qhov no txhais tau tias; Yog hais tias ib tug compound yuav soluble nyob rau hauv ib tug nruab nrab, qhov nruab nrab yuav tsum zoo li lub solute. Piv txwv li, polar solutes yaj nyob rau hauv polar nruab nrab tab sis tsis nyob rau hauv ib tug tsis-polar nruab nrab thiab vice versa. Lub dissolution tus nqi thiab tus nqi ntawm cov kua uas yuav yaj tau yog tswj los ntawm cov solubility. Solubility tsis tu ncua muab lub tswv yim ntawm ntau npaum li cas cov khoom tuaj yeem yaj thiab mus rau theem kev daws teeb meem hauv kev sib npaug. Dissolution yog ib qho txheej txheem kinetic, thiab rau ib yam khoom uas yuav tsum tau yaj, tag nrho lub zog dawb yuav tsum tsis zoo. Dissolution tus nqi nyob ntawm ntau yam lwm yam. Piv txwv li, stirring, co, cua sov, txias yog ib co ntawm cov uas peb yuav ua rau kom los yog txo tus nqi dissolution. Qee cov tshuaj nkag tau yooj yim thaum qee cov tshuaj tsis yog. Piv txwv li, ionic compounds dissolve sai heev hauv dej, whereas starch yog minutely soluble.
Kev sib cais yog ib qho tseem ceeb heev kom muaj kev sib npaug ntawm qhov xwm txheej. Peb siv cov thawj tswj kev sib cais los xyuas qhov zoo ntawm cov tshuaj, hauv kev lag luam kws tshuaj.
Kev tsis sib haum
Kev puas tsuaj txhais tau tias tawg mus rau me me, molecules lossis hais. Hauv chemistry, cov tebchaw sib cais thaum muaj kev cuam tshuam. Los yog lwm yam lawv tuaj yeem tawg thaum tawg. Radioactive decay yog lwm hom kev puas tsuaj uas cov khoom siv hluav taws xob tau txais cov saw hlau ntawm cov tshuaj tiv thaiv kev lwj, thiab thaum kawg lawv tau hloov mus rau lwm qhov.
Dab tsi yog qhov sib txawv ntawm Kev Txiav Txim thiab Kev Txiav Txim?
• Dissolution yog txheej txheem ntawm dissolving ib yam khoom nyob rau hauv ib tug hnyav. Disintegration txhais tau tias tawg mus rau me me, molecules los yog hais.
• Txij li thaum lub solute tau tawg mus rau hauv cov khoom me me (tsis yog tag nrho cov piv txwv) hauv kev sib cais, kev sib cais kuj yog cov txheej txheem tawg.
