Qhov kub thiab txias hloov cov teeb meem li cas?
Qhov kub thiab txias hloov cov teeb meem li cas?

Video: Qhov kub thiab txias hloov cov teeb meem li cas?

Video: Qhov kub thiab txias hloov cov teeb meem li cas?
Video: Saib Mis paub Poj niam (hluas nkauj) tus yam ntxwv lub siab 2024, Kaum ib hlis
Anonim

Lub cev tej yam kev mob zoo li kub thiab siab cuam tshuam lub xeev qhov teeb meem . Thaum thermal zog ntxiv rau ib yam khoom, nws kub nce, uas hloov tau nws xeev los ntawm cov khoom mus rau cov kua (melting), kua rau roj (vaporization), los yog cov khoom rau roj (sublimation).

Kuj nug, qhov kub thiab txias cuam tshuam li cas rau cov kua thiab roj?

Cov nyhuv ntawm kub thiab siab rau a ua kua tuaj yeem piav qhia nyob rau hauv cov nqe lus ntawm kinetic-molecular txoj kev xav. Raws li cov kub ntawm a khov kho , ua kua los yog gas nce, cov khoom txav nrawm dua. Raws li cov kub ntog, cov hais qeeb qeeb. Yog ib ua kua yog txias txaus, nws tsim a khov kho.

Kuj Paub, qhov piv txwv ntawm sublimation yog dab tsi? Sublimation yog ib qho kev hloov pauv tshwj xeeb ntawm lub xeev thaum cov khoom siv hla cov kua theem thiab txav ncaj qha mus rau theem roj. Qhov no tshwm sim vim hais tias cov tshuaj absorbs zog sai heev los ntawm ib puag ncig uas melting yeej tsis tshwm sim. Piv txwv ntawm Sublimation : "Dry ice" los yog cov khoom carbon dioxide sublimes.

Ua li no, dab tsi yog qhov cuam tshuam ntawm kev hloov ntawm qhov kub thiab txias?

Cov nyhuv ntawm kev hloov ntawm qhov kub thiab txias ntawm qhov teeb meem: ntawm nce lub kub ntawm cov khib nyiab, lub zog kinetic ntawm cov khoom nce. Vim lub nce nyob rau hauv lub zog kinetic, cov hais pib vibrating nrog ceev dua. Lub zog muab los ntawm tshav kub overcomes lub zog ntawm attraction ntawm cov hais.

Lub siab cuam tshuam li cas?

Cov siab thiab ntim ntawm a gas yog inversely proportional. Yog li ntawd, thaum koj nce lub siab ntawm a gas , lub ntim txo. Qhov no txhais tau tias raws li tus siab ntawm a gas nce, cov gas muaj qhov chaw tsawg dua los nthuav tawm thiab cov khoom nyob ze ua ke.

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