Vim li cas qhov ntom ntom suav tias yog cov khoom siv tshuaj lom neeg?
Vim li cas qhov ntom ntom suav tias yog cov khoom siv tshuaj lom neeg?

Video: Vim li cas qhov ntom ntom suav tias yog cov khoom siv tshuaj lom neeg?

Video: Vim li cas qhov ntom ntom suav tias yog cov khoom siv tshuaj lom neeg?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
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A chemical khoom yog a vaj tse uas piav txog nws muaj peev xwm ua rau tshuaj lom nrog lwm yam tshuaj thiab yog li ntawd ceev yog tsis yog a chemical khoom . Ceev yog qhov kom muaj nuj nqis ntawm ib yam khoom faib los ntawm nws ntim.

Tsis tas li ntawd, qhov ntom ntom puas yog cov khoom siv tshuaj lom neeg?

Tus general khoom ntawm cov teeb meem xws li xim, ceev , hardness, yog piv txwv ntawm lub cev khoom . Cov khoom uas piav qhia txog yuav ua li cas cov tshuaj hloov mus rau hauv ib qho khoom sib txawv kiag li hu ua tshuaj muaj zog . Flammability thiab corrosion / oxidation kuj yog cov piv txwv ntawm tshuaj muaj zog.

Kuj Paub, yam khoom dab tsi yog qhov ntom ntom? Qhov ntom yog lub cev vaj tse uas yog txiav txim los ntawm kev faib qhov loj ntawm ib tug muab tus nqi ntawm ib yam khoom los ntawm nws ntim. Nws yog feem ntau qhia nyob rau hauv units ntawm g / mL, uas txhais tau tias 'grams ib milliliter'. Qhov ntom yog ib qho intensive vaj tse vim cov ceev ntawm ib yam khoom ntshiab yuav zoo tib yam no teeb meem npaum li cas ntawm nws koj muaj.

Raws li txoj cai, vim li cas qhov ntom ntom tsis yog tshuaj lom neeg hloov pauv?

Kev piav qhia: Tshuaj cov khoom yog cov uas tsuas yog tsim los ntawm kev ua ib tug tshuaj tiv thaiv (kub ntawm combustion, flash point, enthalpies ntawm tsim, thiab lwm yam). Qhov ntom tuaj yeem tsim tau yooj yim los ntawm kev txiav txim siab qhov loj thiab ntim ntawm cov khoom, tsis yog tshuaj tiv thaiv yog koom nrog, yog li nws lub cev khoom.

Puas yog kev txhawb nqa combustion yog lub cev lossis tshuaj lom neeg?

Lwm yam lub cev muaj zog , xws li lub melting kub ntawm hlau los yog lub freezing kub ntawm cov dej, tsuas yog yuav tsum tau soj ntsuam raws li qhov teeb meem undergoes a lub cev hloov. Piv txwv ntawm tshuaj muaj zog suav nrog flammability, toxicity, acidity, reactivity (ntau hom), thiab kub ntawm combustion.

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