Video: Puas yog huab cua hloov pauv lub cev lossis tshuaj lom neeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hloov ntawm xeev yog kev hloov ntawm lub cev hauv qhov teeb meem. Lawv yog reversible kev hloov uas tsis ua hloov teeb meem tshuaj pleev lub tshuaj khoom. Piv txwv li, thaum huab hloov rau dej vapor, nws tseem yog dej thiab tau hloov rov qab mus ua kua dej dua.
Tsis tas li ntawd, dej vapor puas hloov lub cev?
Dej , ice, thiab dej vapor yog txhua yam tib yam khoom siv. Raws li dej hloov mus ua dej khov los yog dej vapor , cov dej molecules lawv tus kheej tsis hloov . Hloov hauv xeev yog kev hloov ntawm lub cev vim kev hloov hauv xeev tsis ua hloov yam tseem ceeb.
Tsis tas li ntawd, dej vapor puas yog lub cev lossis tshuaj hloov pauv? Boiling dej dej yog ib qho piv txwv ntawm a hloov lub cev thiab tsis yog a tshuaj hloov vim cov dej vapor tseem muaj tib lub qauv molecular li kua dej (H2O). Yog hais tias cov npuas tau tshwm sim los ntawm decomposition ntawm ib tug molecule rau hauv cov pa roj (xws li H2O → H2 thiab O2), ces boiling yuav ib tshuaj hloov.
Ib yam li ib tug yuav nug, qhov hloov pauv theem twg ua rau huab cua?
Fog tshwm sim thaum dej vapor, los yog dej hauv nws daim ntawv gaseous, condenses. Thaum lub sij hawm condensation, cov molecules ntawm cov dej vapor sib xyaw ua cov kua dej me me uas dai rau saum huab cua. Koj pom tau huab vim cov dej me me no. Dej vapor, roj, tsis pom.
Puas yog melting hloov lub cev?
Melting yog a hloov lub cev vim nws koom nrog hloov ntawm cov teeb meem los ntawm lub xeev khoom mus rau hauv ib qho kua, tsis muaj dab tsi hloov hauv tshuaj
Pom zoo:
Puas yog tshuaj lom neeg ntom ntom lossis lub cev hloov pauv?
Kev piav qhia: Cov khoom siv tshuaj lom neeg tsuas yog tsim los ntawm kev ua cov tshuaj tiv thaiv (kub ntawm combustion, flash point, enthalpies ntawm kev tsim, thiab lwm yam). Qhov ntom tuaj yeem tsim tau yooj yim los ntawm kev txiav txim siab qhov ntim ntawm cov khoom, tsis muaj kev cuam tshuam, yog li nws aphysical khoom
Puas yog hluav taws kub nyhiab yog qhov hloov pauv ntawm lub cev lossis tshuaj lom neeg?
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Puas yog cov dej npau npau yog tshuaj lom neeg lossis lub cev hloov?
Boiling waterBoiling water yog ib qho piv txwv ntawm kev hloov ntawm lub cev thiab tsis yog kev hloov tshuaj lom neeg vim tias cov dej vapor tseem muaj cov qauv molecular zoo li cov kua dej (H2O). Yog hais tias cov npuas tau tshwm sim los ntawm decomposition ntawm ib tug molecule rau hauv cov pa roj (xws li H2O → H2 thiab O2), ces boiling yuav ib tug tshuaj hloov
Puas muaj kev hloov pauv ntawm lub cev lossis tshuaj lom neeg thaum muaj suab thaj yaj hauv dej?
Dissolving qab zib hauv dej yog ib qho piv txwv ntawm kev hloov lub cev. Nov yog vim li cas: Kev hloov tshuaj lom neeg tsim cov khoom siv tshuaj tshiab. Txhawm rau kom qab zib hauv dej los ua cov tshuaj hloov pauv, ib yam tshiab yuav tsum tau ua. Yog tias koj evaporate cov dej los ntawm cov kua qab zib-dej, koj nyob nraum nrog qab zib
Yuav ua li cas thaum muaj tshuaj lom neeg lossis lub cev hloov pauv?
Kev hloov tshuaj lom neeg tshwm sim los ntawm cov tshuaj tiv thaiv tshuaj, thaum lub cev hloov pauv yog thaum cov teeb meem hloov pauv tab sis tsis yog tshuaj lom neeg. Piv txwv ntawm kev hloov tshuaj lom neeg yog hlawv, ua noj, xeb, thiab rotting. Piv txwv ntawm kev hloov lub cev yog boiling, melting, khov, thiab shredding