Video: Vim li cas cov lus ntsev tau yooj yim yaj hauv dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub rooj ntsev dissolves hauv dej vim polar heev dej Cov molecules nyiam ob qho tib si zoo them sodium ions thiab cov tsis zoo chloride ions. Lwm yam ntsev yaj nyob rau hauv dej , ib yam nkaus, tab sis qee qhov ntawm lawv yaj yooj yim dua lwm tus.
Cia li xav txog qhov no, yog vim li cas ntsev yaj thiaj yooj yim hauv dej?
Dej ua tau yaj ntsev vim qhov zoo ntawm dej molecules nyiam qhov tsis zoo chloride ions thiab qhov tsis zoo ntawm dej molecules attracts qhov zoo sodium ions. Tus nqi ntawm cov khoom uas muaj peev xwm yaj nyob rau hauv ib tug kua (ntawm ib tug tshwj xeeb kub) yog hu ua lub solubility ntawm cov khoom.
Tsis tas li ntawd, ua li cas koj yaj ntsev hauv dej? Ncuav lub ntsev rau hauv dej . Yog tias ntsev tsis tam sim ntawd yaj , sim sib tov nrog rab diav los yog spatula. Koj xav tau dej molecules tuaj nyob rau hauv kev sib cuag nrog koj ntsev rau yaj nws, thiab nplawm tej yam uas yuav pab tau qhov ntawd ntau sai sai. Koj tuaj yeem ua kom sov qhov sib tov los pab cov ntsev yaj.
Ib tug kuj nug tias, ntsev yuav siv sij hawm ntev npaum li cas kom yaj hauv dej?
Boiling dej (70 degrees) - tag nrho yaj nyob rau hauv lub 2 feeb lub sij hawm. Cov dej khov dej txias (3 degrees) - cov ntsev ntsev poob mus rau ib nrab qhov loj tab sis tsis yaj.
Cov lus ntsev NaCl yaj hauv dej li cas?
Ntsev yuav xwb yaj hauv dej thiab tsis muaj tshuaj lom neeg tshwm sim, vim dej molecule yog polar heev thiab nws rub tawm cov sodium thiab chlorine ions thiab thaum nws tag nrho yaj tus dej thiab ntsev Cov tshuaj yuav muaj cov sodium thiab chlorine ions.
Pom zoo:
Vim li cas cov xim cuam tshuam pom tseeb rau cov yeeb yaj kiab nyias dua li cov yeeb yaj kiab tuab?
Kev cuam tshuam ntawm lub teeb los ntawm sab sauv thiab sab qis ntawm cov xab npum lossis cov tshuaj ntxuav tes yog tshwm sim. Vim li cas cov xim cuam tshuam pom tseeb rau cov yeeb yaj kiab nyias dua li cov yeeb yaj kiab tuab? Vim yog kev cuam tshuam yoj, zaj duab xis ntawm cov roj ntawm dej hauv lub hnub ci pom tau tias daj rau cov neeg soj ntsuam ncaj qha saum lub dav hlau
Dab tsi hloov cov tshuaj zog hauv cov zaub mov rau hauv daim ntawv uas siv tau yooj yim dua?
Mitochondria muaj nyob rau hauv koj lub hlwb, nrog rau cov hlwb ntawm cov nroj tsuag. Lawv hloov lub zog khaws cia hauv cov molecules los ntawm broccoli (los yog lwm yam roj molecules) rau hauv daim ntawv ntawm tes siv tau
Vim li cas ionic compounds yaj yooj yim hauv dej?
Yuav kom yaj cov ionic compound, cov dej molecules yuav tsum muaj peev xwm stabilize cov ions uas tshwm sim los ntawm kev tawg cov ionic daim ntawv cog lus. Lawv ua qhov no los ntawm hydrating cov ions. Cov dej yog ib tug polar molecule. Thaum koj tso cov khoom ionic hauv dej, cov dej molecules nyiam cov ions zoo thiab tsis zoo los ntawm cov siv lead ua
Puas yog cov lus ntsev acidic lossis yooj yim?
Properties of Table Salt: Rooj ntsev yog cov khoom tsim los ntawm neutralization ntawm cov kua qaub los ntawm lub hauv paus. Yog li nws tsis yog Acid lossis Base. Koj tuaj yeem siv pH Scale los qhia seb nws cov kua qaub lossis lub hauv paus
Koj yuav daws tau cov lus nug piv txwv yooj yim li cas?
Txhawm rau daws cov lus nug no, koj yuav tsum xub ntxiv ua ke ob qho ntawm qhov sib piv piv txwv li 4 + 2 = 6. Tom qab ntawd koj yuav tsum faib tag nrho cov nyiaj uas siv tus lej xws li 600/6 = 100. Txhawm rau ua kom paub ntau npaum li cas txhua tus neeg tau txais, koj mam li muab lawv faib los ntawm 100