Video: Koj puas tuaj yeem cais cov colloid los ntawm kev lim dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Colloids feem ntau tsis ua cais ntawm sawv. Lawv tsis cais los ntawm lim . Suspensions yog homogeneous sib xyaw nrog cov khoom uas muaj cov kab uas hla ntau dua 1000 nm, 0.000001 meter. Qhov sib tov ntawm particle ua tau raug cais los ntawm lim.
Raws li txoj cai, koj tuaj yeem lim cov colloid?
Colloids tsis zoo li cov kev daws teeb meem vim tias lawv cov khoom tawg yooj yim ntau dua li cov kev daws teeb meem. Dispersed particles ntawm a colloid tsis tuaj yeem sib cais los ntawm lim , mas lawv tawg lub teeb, ib qho tshwm sim hu ua Tyndall effect.
Ib yam li ntawd, Tyndall cov nyhuv yuav siv li cas kom paub qhov txawv ntawm ib qho colloid thiab kev daws teeb meem? Cov Tyndall Effect yog cov nyhuv ntawm lub teeb tawg nyob rau hauv colloidal dispersion, thaum tsis pom lub teeb hauv qhov tseeb daws . Qhov no nyhuv yog siv los txiav txim seb qhov sib tov puas yog qhov tseeb daws los yog a colloid.
Yog li ntawd, yuav ua li cas cais ib tug colloid sib tov?
Colloids tsis tuaj yeem sib cais los ntawm kev pom vim qhov loj ntawm cov khoom me me dhau los ua tus kheej pom los ntawm qhov muag liab qab. Tab sis peb siv cov txheej txheem tshwj xeeb hu ua centrifugation.
Dab tsi distinguishes ib tug colloid los ntawm kev ncua thiab kev daws teeb meem?
A daws yog ib txwm pob tshab, lub teeb hla dhau tsis muaj kev tawg los ntawm cov kuab tshuaj uas yog cov molecule loj. A colloid yog nruab nrab ntawm a daws thiab a kev ncua . Thaum a kev ncua yuav cais tawm a colloid yuav tsis. Colloids tuaj yeem paub qhov txawv ntawm kev daws teeb meem siv cov nyhuv Tyndall.
Pom zoo:
Koj puas tuaj yeem qhia los ntawm cov kev nqus dej no seb lub teeb liab puas ua haujlwm zoo hauv kev tsav tsheb photosynthesis?
Ib qho tsis tuaj yeem qhia los ntawm daim duab no, tab sis vim tias chlorophyll ib lub teeb liab, peb tuaj yeem kwv yees tias nws yuav ua tau zoo hauv kev tsav tsheb photosynthesis. Cov xim no muaj peev xwm nqus tau ntau lub teeb ntawm lub teeb (thiab yog li ntau lub zog) dua li chlorophyll ib leeg tuaj yeem nqus tau
Cov dej hauv av puas tuaj yeem ua rau cov dab dej?
Ntau txhiab qhov tshwm sim hauv lub dab dej tuaj yeem pom thoob plaws hauv lub xeev Florida suav nrog ntau yam uas txuas hauv av mus rau cov dej ntws, dej ntws thiab pas dej. -Sinkholes tsim nyob rau hauv karst struts los ntawm lub cev qhuav dej ntawm nto sediments rau hauv av voids
Cov khoom puas tuaj yeem sib cais los ntawm lub cev txhais tau tias?
Kev sib xyaw heterogeneous yog kev sib xyaw ntawm ob lossis ntau yam tshuaj (cov ntsiab lus lossis cov khoom sib txuas), qhov twg cov khoom sib txawv tuaj yeem pom qhov txawv thiab yooj yim sib cais los ntawm lub cev. Piv txwv li: sib tov ntawm xuab zeb thiab dej
Peb puas tuaj yeem cais tus ncej sib nqus los ntawm cov hlau nplaum?
Hloov chaw, ob lub sib nqus ncej tshwm sim ib txhij los ntawm kev sib sau ua ke ntawm txhua qhov tam sim no thiab lub sijhawm nyob rau hauv cov hlau nplaum. Vim li no, ob tug ncej ntawm ib tug sib nqus dipole yuav tsum yeej ib txwm muaj sib npaug zos thiab opposite lub zog, thiab ob tug ncej tsis tuaj yeem sib cais los ntawm ib leeg
Cov xuab zeb thiab dej puas tuaj yeem sib cais pom?
Kev piav qhia: Kev lim dej ua haujlwm zoo tshaj plaws yog tias cov ntsiab lus tsis yaj hauv cov kuab tshuaj. Piv txwv li, xuab zeb thiab dej tuaj yeem sib cais los ntawm kev pom vim tias ob qho tib si tsis yaj nrog ib leeg. Txawm li cas los xij, cov suab thaj thiab dej yuav tsis raug cais los ntawm kev pom thaum lawv yaj nrog ib leeg