2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov kua dej ntawm qhov kub hauv qab lawv cov ntsiab lus melting yog hu ua kua supercooled. Raws li tau piav qhia hauv qab no, ua kom txias cov kua supercooled hauv qab iav hloov kub Tg ua ib khob. Nyob ze Tg, molecular motion tshwm sim qeeb heev.
Yuav ua li cas hauv qab no yog cov kua supercooled?
Kev piav qhia: iav qee zaum hu ua kua supercooled vim nws tsis tsim cov qauv crystalline, tab sis hloov ua cov khoom amorphous uas tso cai rau cov molecules hauv cov khoom txav mus ntxiv.
piv txwv ntawm supercooling yog dab tsi?
Supercooling, lub xeev uas cov kua tsis khov txawm tias qis dua lawv qhov chaw khov, tseem ua rau cov kws tshawb fawb niaj hnub no. Ib qho piv txwv zoo ntawm qhov tshwm sim no tau pom txhua hnub hauv huab cua: huab cua nyob hauv qhov siab siabyog cov tsub zuj zuj ntawm cov tee dej ntawm cov dej hauv qab lawv qhov chaw khov.
Ice ice supercooled kua?
Ice yug hauv thaj chaw uas tsis muaj kev txav mus los ntawm dej supercooled kua.
Puas yog dej supercooled yog kua?
Cov ntsiab lus: Kev ntsuas thawj zaug muab pov thawj tias cov dej txias supercooled muaj nyob hauv ob lub qauv sib txawv uas sib koom ua ke thiab sib txawv ntawm qhov ntsuas kub. Supercooled dej yog tiag tiag ob kua hauv ib.
Pom zoo:
Puas yog carbonic acid yog cov kua qaub uas muaj zog?
Hydrochloric acid (HCl) yog suav tias yog cov kua qaub uas muaj zog vim tias nws tsuas yog muaj nyob rau hauv daim ntawv ionized nkaus hauv lub cev, whereas carbonic acid (H 2CO 3 ) yog cov kua qaub tsis muaj zog vim nws yog ionized tsis tiav, thiab, ntawm qhov sib npaug, tag nrho peb cov reactants muaj nyob rau hauv lub cev kua.
Puas yog txiv laum huab xeeb yog cov kua dej uas tsis yog newtonian?
Tab sis muaj lwm cov kua dej uas koj paub ntawm qhov ntawd kuj tsis yog-newtonian. Peanut butter thiab almond butter yog cov piv txwv zoo. … Cov kua dej uas ua tau zoo li no yog hu ua "cov kua dej uas tuab heev". Ketchup kuj tsis yog-newtonian tshwj tsis yog nyob rau hauv txoj kev tawm tsam.
Rau cov kua dej uas tsis yog-newtonian pom meej viscosity yog qhov ua haujlwm ntawm?
Rau cov kua Newtonian, qhov pom tseeb viscosity yog tas mus li, thiab sib npaug rau Newtonian viscosity ntawm cov kua, tab sis rau cov dej tsis-Newtonian, qhov pom tseeb viscosity nyob ntawm tus nqi shear. Koj pom li cas pom meej viscosity ntawm cov kua uas tsis yog-Newtonian?
Thaum cov kua supercooled pib khov qhov kub?
Cov kua dej supercooled nce hauv qhov kub thiab txias thaum cov txheej txheem ntawm khov pib, vim tias nyob rau hauv cov txheej txheem ntawm kev hloov ntawm lub xeev los ntawm cov khoom mus rau lub xeev cov ntaub ntawv muab tawm nws latent cua sov.
Puas suav tias yog kua supercooled?
Glass yog hu ua kua supercooled vim iav yog cov khoom amorphous. Amorphous solids muaj qhov nyiam ntws tab sis, maj mam. Nws tsis tsim cov qauv crystalline li cov khoom hauv cov khib nyiab tsis txav tab sis ntawm no nws txav mus. Li no nws yog hu ua kua supercooled.
