Video: Vim li cas qhov ntom ntom suav tias yog cov khoom siv tshuaj lom neeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Dab tsi yog qhov ntom ntom ntom ntom ntom ntom ntom?
Ib daim phiaj density yog ib qho piv txwv ntawm kev faib cov lej sib txawv. Nws yuav siv ib ntsiav ceev kwv yees los qhia qhov tshwm sim ceev muaj nuj nqi ntawm lub nce mus nce los (saib ntxiv). Nws yog ib tug smoothed version ntawm lub histogram thiab yog siv nyob rau hauv tib lub tswvyim
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom loj tshwm sim ntawm koj cov khaub ncaws?
Tam sim ntawd yuav siv dab tsi yog tias koj cov khaub ncaws raug hluav taws lossis yog tias muaj tshuaj lom ntau tshwm sim ntawm koj cov khaub ncaws? Koj mus ncaj qha rau da dej kev nyab xeeb thiab sawb ntawm tag nrho koj cov khaub ncaws
Dab tsi yog qhov txawv ntawm qhov ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom nrog cov piv txwv?
Nws ua haujlwm nyob rau hauv ob qho tib si loj thiab me me thiab tsis yog raws li cov pej xeem ceev. Ceev dependent yam yog cov uas tswj cov kev loj hlob ntawm ib tug pej xeem nyob rau ntawm nws lub ceev thaum ceev ywj siab yam yog cov uas tswj pejxeem kev loj hlob yam tsis muaj nyob rau nws cov ceev
Yog vim li cas sodium poov tshuaj twj tso kua mis suav hais tias yog ib qho kev thauj mus los uas cov kev taw qhia yog cov sodium thiab poov tshuaj tau pumped?
Sodium-Potassium Pump. Kev thauj mus los yog lub zog xav tau cov txheej txheem ntawm kev siv cov molecules thiab ions hla daim nyias nyias 'nce toj' - tiv thaiv kev sib tw gradient. Txhawm rau txav cov molecules tawm tsam lawv cov concentration gradient, yuav tsum muaj cov khoom siv protein
Lub raj mis ntom ntom siv li cas los nrhiav qhov ntom ntawm cov kua?
Qhov loj thiab qhov loj ntawm cov molecules nyob rau hauv cov kua thiab ze npaum li cas lawv tau ntim ua ke txiav txim siab qhov ntom ntawm cov kua. Ib yam li cov khoom, qhov ntom ntawm cov kua sib npaug ntawm cov kua faib los ntawm nws qhov ntim; D = m/v. Qhov ceev ntawm cov dej yog 1 gram ib cubic centimeter