Cov txheej txheem:
Video: Cov khoom dab tsi tuaj yeem xeb?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov hlau twg yuav tsim xeb?
- Hlau. Hlau yuav xeb sai heev. Yog hais tias hlau raug tso cai kom ntub thiab raug rau huab cua pom xim av xeb tau txhim kho hauv ob peb teev xwb.
- Aluminium. Aluminium kuj tseem mined tawm hauv av raws li oxidized compound hu ua Bauxite.
- Tooj. Tooj liab rusts los ntawm nws cov xim hlau ntuj xim av ntxoov ntxoo mus rau ib tug kaj ntsuab.
Ntawm no, dab tsi tuaj yeem xeb?
Kev xeb tshwm sim thaum hlau los yog nws cov alloys, xws li steel, corrode. Qhov saum npoo ntawm ib daim ntawm hlau yuav corrode ua ntej nyob rau hauv lub xub ntiag ntawm oxygen thiab dej. Muab sijhawm txaus, txhua daim hlau yuav hloov tag nrho mus rau hauv xeb thiab disintegrate. Cov txheej txheem ntawm xeb yog cov tshuaj tiv thaiv combustion, zoo ib yam li hluav taws kub.
Qhov thib ob, dab tsi ua rau xeb ntawm hlau? xeb yog lwm lub npe rau hlau oxide, uas tshwm sim thaum hlau los yog hlau alloy uas muaj hlau, xws li hlau , yog raug rau oxygen thiab noo noo rau lub sijhawm ntev. Nyob rau tib lub sijhawm, cov pa oxygen sib xyaw nrog cov hlau nyob rau theem atomic, tsim ib qho chaw tshiab hu ua oxide thiab ua kom tsis muaj zog ntawm daim ntawv cog lus hlau nws tus kheej.
Tom qab, lo lus nug yog, dab tsi hlau xeb tshaj plaws?
Aluminium yog ib qho ntawm feem ntau nquag siv hlau ntawm lub ntiaj teb, thiab nws yog arguably feem ntau nto moo tsis xeb . Aluminium tsis muaj xeb , xwb hlau tshwj xeeb oxidation hu ua xeb thiab tsis muaj hlau siv thaum tsim aluminium. Txawm li cas los xij, zoo li txhua yam hlau , Aluminium yog raug rau corrosion.
Dab tsi yog rusting hauv science?
Kev xeb , ib tug paub zoo piv txwv ntawm corrosion , yog qhov tawg ntawm cov hlau hlau. Cov reactants ntawm cov tshuaj tiv thaiv no yog hlau, dej, thiab oxygen, thiab cov khoom yog hydrated hlau oxide, zoo dua lub npe hu ua xeb . xeb , tsis zoo li hlau, yog crumbly, txiv kab ntxwv, thiab zoo nkauj heev tsis muaj txiaj ntsig rau kev tsim khoom.
Pom zoo:
Cov khoom siv ntxuav dab tsi tuaj yeem tua koj?
Qhov tseem ceeb tshaj plaws, TSIS TXHOB muab ob lub tshuab ntxhua khaub ncaws sib txawv ua ke, tshwj xeeb tshaj yog cov khoom uas muaj ammonia thiab chlorine (bleach). Qhov sib xyaw no tuaj yeem ua rau muaj cov pa roj hu ua chloramine, uas tuaj yeem ua rau muaj teeb meem ua pa hnyav thiab tuaj yeem ua rau tuag taus yog tias nqus tau ntau heev
Dab tsi yog qhov me me ntawm cov khoom uas khaws cov khoom ntawm lub caij?
Ib qho atom yog qhov tsawg tshaj plaws ntawm txhua lub caij uas tseem khaws cov yam ntxwv ntawm lub caij ntawd. Ib daim ntawm ib lub caij uas peb tuaj yeem pom lossis kov yog ua los ntawm ntau, ntau atoms thiab tag nrho cov atoms yog tib yam lawv txhua tus muaj tib tus naj npawb ntawm protons
Dab tsi yog lub zog uas tuaj yeem tshwm sim ntawm qhov chaw ua si los ua kom cov khoom pib txav mus los?
Kev sib txhuam. Thaum lub ntiajteb txawj nqus yog ib qho tseem ceeb ntawm physics rau qhov chaw ua si swb, kev sib txhuam yog qhov tseem ceeb sib npaug. Kev sib txhuam ua haujlwm tiv thaiv lub ntiajteb txawj nqus kom qeeb tus neeg qhovntsej thiaj tsis mob ntawm tus swb. Kev sib txhuam yog ib qho quab yuam uas tshwm sim thaum twg ob yam khoom rub tawm rau ib leeg, xws li swb thiab ib tus neeg lub nraub qaum
Cov khoom puas tuaj yeem muab cais ua cov khoom yooj yim?
Cov ntsiab lus tsis tuaj yeem tawg mus rau hauv cov khoom yooj yim. Ib yam li ntawd, ib lub ntsiab lus tsis tuaj yeem hloov pauv mus rau hauv ib lub caij sib txawv. Cov khoom siv tshuaj yog qhov yooj yim ntawm cov khoom
Txoj cai thermodynamic twg hais tias koj Tsis tuaj yeem hloov 100 feem pua ntawm cov cua sov rau hauv cov khoom siv hluav taws xob ntawm cov lus teb xaiv?
Txoj Cai thib ob