Dab tsi tshwm sim rau qhov kub ntawm cov khoom thaum lub sij hawm hloov pauv?
Dab tsi tshwm sim rau qhov kub ntawm cov khoom thaum lub sij hawm hloov pauv?

Video: Dab tsi tshwm sim rau qhov kub ntawm cov khoom thaum lub sij hawm hloov pauv?

Video: Dab tsi tshwm sim rau qhov kub ntawm cov khoom thaum lub sij hawm hloov pauv?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Thaum lub sijhawm hloov pauv , cov kub ntawm ib yam khoom nyob tas li. Peb nquag saib theem hloov los ntawm cov khoom mus rau cov kua, xws li melting dej khov. Qhov no yog vim hais tias tus nqi ntawm cov cua sov uas muab rau cov dej khov molecules yog siv los ua kom lawv lub zog kinetic, uas yog reflected hauv. kub nce.

Tsis tas li ntawd, ua li cas rau qhov kub thiab txias thaum lub sij hawm hloov theem?

Tab sis tsis muaj kub hloov mus a theem hloov ua tiav. i.e. thaum lub sij hawm hloov theem , lub zog muab tsuas yog siv los cais cov molecules; tsis muaj ib feem ntawm nws yog siv los ua kom lub zog kinetic ntawm cov molecules. Yog li nws kub yuav tsis sawv, vim kinetic zog ntawm molecules tseem zoo li qub.

Tsis tas li, dab tsi tshwm sim rau qhov ntsuas kub ntawm cov khoom ua ntej thiab tom qab theem hloov? Ua ntej tshaj, koj yuav tsum paub tias qhov theem hloov yog cim los ntawm cov ntsiab lus B thiab D ntawm daim duab. Lawv yog qib vim tias tag nrho cov zog (los yog kub ) raug ntxiv yog noj los ntawm cov txheej txheem lub cev. Yog li Cov kub yog nce ua ntej tus theem hloov , thiab tom qab lub sij hawm hloov.

Ib sab ntawm qhov no, ua li cas rau qhov kub ntawm cov khoom thaum nws hloov lub xeev?

Thaum a yam khoom yog rhuab, nws nce thermal zog. Yog li ntawd, nws cov khoom txav nrawm dua thiab nws kub nce. Thaum a yam khoom yog txias, nws poob thermal zog, uas ua rau nws hais mus qeeb qeeb thiab nws kub poob.

Yuav ua li cas thaum lub sij hawm hloov theem?

Lawv yog kev hloov hauv kev sib txuas lub zog ntawm cov molecules. Yog cua sov tuaj rau hauv ib yam khoom thaum lub sijhawm hloov pauv , ces lub zog no yog siv los rhuav cov bonds ntawm lub molecules ntawm cov khoom. Cov cua sov yog siv los rhuav tshem cov kev sib txuas ntawm cov dej khov molecules thaum lawv tig mus ua kua theem.

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