Video: Dab tsi tshwm sim thaum qab zib thiab ntsev sib tov hauv dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum koj dissolve qab zib los yog ntsev hauv aliquid-hais, dej - ua li cas yog tias qab zib molecules txav kom haum lawv tus kheej nruab nrab ntawm lawv dej nyob rau hauv ib lub khob los yog beaker. Ib tug solute, xws li qab zib , yaj nyob rau hauv ib qho hnyav, xws li dej , ua rau muaj kua.
Tsuas yog li ntawd, ua li cas thaum koj sib tov qab zib thiab dej?
cov molecules tau tawg mus rau hauv atoms thiab dispersed nyob rau hauv dej . Cov qab zib molecules tsis tuaj yeem ploj mus tab sis lawv tuaj yeem tawg mus rau hauv dej . Lawv tseem yuav yog qab zib molecules tsuas yog tsis txuas rau lwm yam molecules ntawm qab zib . tus dej thiab cov qab zib particle yuav sib tov ua ke thiab tsim ib yam tshiab.
Tom qab ntawd, lo lus nug yog, koj yuav ua li cas cais cov suab thaj thiab ntsev? Qab Zib tuaj yeem yaj hauv cawv tab sis ntsev tsis tuaj yeem yaj hauv cawv kom peb ntxiv tau sib tov inalcohol thiab lim nws thiab tau txais qab zib cawv raws li cais thiab ntsev tshuav nyob rau thaum kawg.
Tsis tas li ntawd, vim li cas piam thaj thiab ntsev yaj hauv dej?
Qab zib dissolves hauv dej vim hais tias lub zog yog muab tawm thaum lub me ntsis polar sucrose molecules tsim intermolecularbonds nrog polar dej molecules. Peb tuaj yeem xav tias ntsev dissociate rau hauv lawv cov ions thaum lawv yaj hauv dej.
Puas yog qab zib lossis ntsev yaj sai dua hauv dej?
Qab Zib Dissolves hauv Dej nrawm dua Tshaj Ntsev Science Projects Nyob rau hauv qhov kev sim no qab zib yuav tsum yaj sai dua nyob rau hauv hnyav dua li hnyav. Yog vim li cas qab zib molecules loj dua ions ntawm yaj ntsev . Qhov no tso cai ntau dua dej molecules los nyob ib puag ncig ib tug particles thiab kos lawv mus rau hauv kev daws sai dua.
Pom zoo:
Cov dej ntws twg yog qhov siab heev thiab tshwm sim ob zaug hauv ib hlis thaum lub hli thiab lub hnub sib haum?
Es tsis txhob, lub sij hawm yog muab los ntawm lub tswv yim ntawm tide 'caij nplooj ntoos hlav tawm.' Caij nplooj ntoos hlav tides tshwm sim ob zaug txhua hli lunar txhua xyoo tsis hais txog lub caij. Neap tides, uas kuj tshwm sim ob zaug hauv ib hlis, tshwm sim thaum lub hnub thiab lub hli nyob ntawm txoj cai kaum rau ib leeg
Dab tsi tshwm sim thaum ntsev yaj hauv dej ntshiab?
Solutes yaj nyob rau hauv dej (solvent) yog hu ua aqueous daws. Yog li thaum cov khoom ionic (ntsev) yaj hauv dej, nws tau tawg mus rau hauv ib tus neeg cations thiab anions uas nyob ib puag ncig los ntawm dej molecules. Piv txwv li, thaum NH4 NO3 yaj nyob rau hauv dej nws tawg mus rau hauv nyias ions
Yuav ua li cas tshwm sim thaum aqueous tov ntawm sodium sulphate thiab barium chloride sib tov?
Thaum cov tshuaj aqueous ntawm sodium sulphate reacts nrog ib tug aqueous tov ntawm barium chloride, precipitate ntawm barium sulphate yog tsim thiab tom qab cov tshuaj tiv thaiv tshwm sim. ii. Yog hais tias cov reactants nyob rau hauv lub cev muaj zog, ces cov tshuaj tiv thaiv yuav tsis tshwm sim. Nws yog ib qho kev hloov pauv ob npaug nrog rau nag lossis daus
Dab tsi ntawm kev sib tov yog qab zib thiab ntsev?
Kev sib xyaw ua ke ntawm ob lub khib nyiab, tsis muaj melting lawv ua ke, feem ntau ua rau muaj kev sib xyaw ua ke.Piv txwv li cov xuab zeb thiab qab zib, ntsev thiab gravel, cov khoom ntim khoom, thiab lub thawv khoom ua si uas muaj cov khoom ua si. Mixturesin ob lossis ntau theem yog heterogeneousmixtures
Puas yog qab zib thiab roj sib tov?
Qab zib yaj yooj yim hauv dej thiab tsis muaj roj