Video: Puas yog boiling kua endothermic los yog exothermic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Teb thiab piav qhia: Boiling yog ib endothermic cov tshuaj tiv thaiv los yog txheej txheem raws li cua sov tau muab rau thiab absorbed los ntawm lub ua kua system ua boiled.
Kuj paub, yog boiling endothermic los yog exothermic?
Peb txhua tus tuaj yeem txaus siab tias cov dej tsis nyob ntawm nws tus kheej boil ntawm chav tsev kub; xwb peb yuav tsum tau cua sov nws. Vim peb yuav tsum ntxiv cua sov, boil dej yog txheej txheem uas chemists hu endothermic . Kom meej meej, yog tias qee cov txheej txheem xav tau cua sov, lwm tus yuav tsum muab cov cua sov thaum lawv ua. Cov no yog hu ua exothermic.
Tsis tas li ntawd, puas yog cov txheej txheem ntawm melting exothermic lossis endothermic? Zoo, nws yooj yim me ntsis mus rau lwm txoj kev. Melting ice yog endothermic - koj tuaj yeem pom qhov no los ntawm kev tso tus pas ntsuas kub rau hauv lub khob sov dej , ntxiv ib lub voos xwmfab dej khov, thiab saib qhov kub thiab txias mus raws li cov dej khov yaj. Cov txheej txheem melting xav tau cua sov mus ntxiv thiab coj nws los ntawm qhov sov dej.
Ib yam li ntawd, puas yog ib qho khoom rau cov kua endothermic lossis exothermic?
Kev hloov ntawm lub xeev txiav txim ntau dua mus rau lub xeev txiav txim tsawg dua (xws li a ua kua gas) yog endothermic . Kev hloov pauv ntawm lub xeev qis dua mus rau lub xeev xaj ntau dua (xws li a ua kua rau a khov kho ) ib txwm exothermic . Kev hloov pauv ntawm a khoom ua kua hu ua fusion (los yog melting).
Yog vim li cas freezing exothermic?
khov , theem kev hloov ntawm cov kua mus rau cov khoom, yog ib qho exothermic txheej txheem vim hais tias lub zog, nyob rau hauv daim ntawv ntawm tshav kub, yog emitted nyob rau hauv tus txheej txheem. Vim khov / melting yog thawj theem kev hloov pauv, muaj cov cua sov latent koom nrog kev hloov pauv.
Pom zoo:
Yuav ua li cas koj twv seb qhov kev tshwm sim yog endothermic los yog exothermic?
Yog hais tias lub zog theem ntawm cov reactants siab tshaj lub zog theem ntawm cov khoom, cov tshuaj tiv thaiv yog exothermic (lub zog tau raug tso tawm thaum lub sij hawm cov tshuaj tiv thaiv). Yog hais tias lub zog theem ntawm cov khoom yog siab tshaj lub zog theem ntawm cov reactants nws yog ib tug endothermic cov tshuaj tiv thaiv
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