Video: Puas qab zib yaj thaum cua sov?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Qhov no txhais tau tias, es yaj nyob rau hauv ib tug meej kub, qab zib tau ua kua ntawm qhov sib txawv ntawm qhov kub thiab txias nyob ntawm cua sov tus nqi. Yog koj kub qab zib sai, siv siab heev kub , nws yuav yaj ntawm qhov kub siab tshaj qhov nws xav tau yog tias koj kub nws maj mam, siv qis kub.
Tib neeg kuj nug, puas qab zib yaj nrog cua sov?
Cov qab zib Kev tshawb fawb melting pom tias yog vim li cas cov kws tshawb fawb thiab cov kws ua zaub mov tsis tuaj yeem cais tawm qhov tseeb melting point rau qab zib yog tias qab zib tsis yog yaj - nws decomposes. Yog koj kub qab zib sai, siv siab heev kub , nws yuav yaj ntawm qhov kub siab tshaj qhov nws xav tau yog tias koj kub nws maj mam, siv qis kub.
Tsis tas li ntawd, puas qab zib yaj lossis yaj? Cov tub ntxhais kawm xav txog qhov ntawd qab zib melts thaum nws yaj hauv dej. Feem ntau yaj suav hais tias yog cov khoom hloov mus rau hauv dej. Qhov no yog ntxiv dag zog ntxiv vim tias cov menyuam yaus pom cov cua sov koom nrog hauv ob qho kev ua haujlwm - lawv paub yog tias koj xav tau yaj ntau qab zib koj sov dej.
Tom qab ntawd, ua li cas rau qab zib thaum rhuab?
Qab Zib yog tsim los ntawm carbon, hydrogen thiab oxygen atoms. Thaum twg cua sov hla lub tswm ciab, cov ntsiab lus no hnov mob nrog hluav taws kom tig mus ua kua. Cov kub ua rau qab zib atoms los ua ke nrog cov pa oxygen hauv huab cua, tsim cov pab pawg tshiab ntawm atoms. Lub zog yog tso tawm nyob rau hauv cov tshuaj tiv thaiv no nyob rau hauv daim ntawv ntawm cov pa luam yeeb thiab dub soot.
Yog vim li cas qab zib decompose thaum rhuab?
Koj ua dab tsi thaum koj ua kub ib qab zib zoo li sucrose yog koj lub cev qhuav dej. Lub crystalline qauv ntawm sucrose tawg thiab cov molecules decompose rau hauv qabzib thiab fructose thiab tom qab ntawd poob dej thiab tom qab ntawd dhau los ua isomers thiab polymerize los ua caramel, xim liab-txiv kab ntxwv xim ntawm chav tsev kub.
Pom zoo:
Yuav ua li cas rau qab zib thaum peb ntxiv rau roj?
Qab zib yaj yooj yim hauv dej thiab tsis muaj roj. Cov dej muaj cov solubility tsawg thaum nws los txog cov cuab yeej. Txij li cov roj tsis soluble hauv dej, nws yuav tsis yaj
Yuav ua li cas thaum ci dej qab zib reacts nrog sulfuric acid?
Thaum cov bicarbonate los ntawm ci sodacomes nyob rau hauv kev sib cuag nrog sulfuric acid tov, nws txais hydrogen ions los ua carbonic acid. Lub seething huab hwm coj ntawm npuas tsim raws li cov pa roj carbon dioxide no khiav tawm ntawm kev daws teeb meem
Dab tsi tshwm sim thaum qab zib thiab ntsev sib tov hauv dej?
Thaum koj dissolve qab zib los yog ntsev hauv aliquid-hais, dej-dab tsi tshwm sim yog tias cov piam thaj molecules txav kom haum lawv tus kheej ntawm lawv cov dej hauv ib khob los yog beaker. Ib qho kuab tshuaj, xws li qab zib, yaj hauv cov kuab tshuaj, xws li dej, ua rau cov kua ua kua
Puas yuav loj hloov thaum qab zib yaj hauv dej?
Puas yog qhov loj ntawm cov piam thaj hloov thaum nws yaj hauv cov kua? Nyob rau hauv tag nrho cov tshuaj, thiab feem ntau cov tshuaj tiv thaiv lub cev, kev txuag ntawm huab hwm coj yog pom. Thiab qhov no txhais tau tias. Thiab yog li yog tias peb yaj cov piam thaj ntau hauv cov dej, qhov loj ntawm cov tshuaj yuav yog PRECISELY
Cov khoom qab zib yaj hauv dej li cas?
Qab Zib yaj nyob rau hauv dej vim hais tias lub zog yog muab tawm thaum lub me ntsis polar sucrose molecules tsim intermolecular bonds nrog polar dej molecules. Cov ntawv cog lus tsis muaj zog uas tsim los ntawm cov kuab tshuaj thiab cov kuab tshuaj tau them nyiaj rau lub zog xav tau los cuam tshuam cov qauv ntawm ob qho tib si ntshiab solute thiab hnyav