Supercooling, lub xeev uas cov kua tsis khov txawm tias qis dua lawv qhov chaw khov kho ib txwm, tseem ua rau cov kws tshawb fawb niaj hnub no. … Supercooled kua yog daig nyob rau hauv ib tug metastable lub xeev txawm nyob rau hauv qab ntawm lawv qhov chaw khov, uas tsuas yog ua tau nyob rau hauv cov kua uas tsis muaj noob uas yuav ua rau crystallization.
supercooling yog dab tsi thiab vim li cas nws tshwm sim?
Supercooling, tseem hu ua undercooling, yog tus txheej txheem ntawm txo qhov kub ntawm cov kua lossis roj hauv qab nws qhov chaw khov yam tsis tau ua ib qho khoom. Nws ua tiav qhov no thaum tsis muaj cov noob siv lead ua lossis cov nucleus nyob ib puag ncig uas cov qauv siv lead ua tuaj yeem tsim.
txheej txheem ntawm supercooling yog dab tsi?
Supercooling yog txheej txheem ntawm kev ua kom txias cov kua hauv qab nws qhov chaw khov, tsis muaj nws ua khov. Cov kua hauv qab nws qhov chaw khov yuav crystallize nyob rau hauv lub xub ntiag ntawm cov noob siv lead ua los yog cov nucleus nyob ib ncig ntawm uas cov qauv siv lead ua tuaj yeem tsim.
Peb tuaj yeem tiv thaiv supercooling hauv chemistry?
Rau qhov thickened Glauber's ntsev, borax txo qis supercooling ntawm ntsev ntawm 15 mus rau 3-4 ° C. Peb cov hmoov sib txawv ntawm carbon (1.5-6.7 I ~ m), tooj liab (1.5-2.5 txm) thiab titanium oxide (2-200 ~, m) tau pom los txo cov supercooling ntawm thickened Na2HPO4.
Koj txhais li cas los ntawm txias txias?
transitive verb.: kom txias hauv qab qhov chaw khov tsis muaj khov lossis crystallization.
