Video: Dab tsi yog ib qho khoom hauv qhov teeb meem?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv ib khov kho , molecules tau ntim ua ke, thiab nws khaws nws cov duab. Teeb meem yog "khoom" ntawm lub ntiaj teb, cov atoms, molecules thiab ions uas ua rau tag nrho cov khoom ntawm lub cev. Hauv ib khov kho , cov khoom no tau ntim zoo ua ke thiab tsis pub dawb txav mus rau hauv cov khoom.
Ib yam li ntawd ib tug yuav nug, dab tsi yog lub xeev cov ntsiab lus txhais?
Teeb meem hauv solid state tuav lub ntim ruaj khov thiab cov duab, nrog cov khoom sib txuas (atoms, molecules lossis ions) kaw ua ke thiab tsau rau hauv qhov chaw. Teeb meem hauv cov kua xeev tuav lub ntim ruaj khov, tab sis muaj qhov sib txawv ntawm cov duab uas yoog kom haum nws lub thawv.
Tsis tas li ntawd, ib tug neeg puas muaj zog? Cov tib neeg lub cev yog tsim los ntawm ntau yam khoom sib txawv, yog li a tib neeg lub cev tsis yog ib lub xeev ntawm teeb meem xwb, tab sis yog tsim los ntawm ntau lub xeev ntawm cov teeb meem. Lwm 15% ntawm lub cev yog ua los ntawm cov pob txha, uas yog feem ntau khov kho.
Nyob rau hauv no txoj kev, dab tsi yog ib tug ruaj khov nyob rau hauv science?
A khov kho yog ib lub xeev ntawm cov teeb meem characterized los ntawm hais tias lawv cov duab thiab ntim yog kuj ruaj khov. A khov kho yog ib qho ntawm plaub lub xeev tseem ceeb ntawm cov teeb meem, nrog rau cov kua, roj, thiab plasma.
Dab tsi yog 3 qhov tseeb ntawm cov khib nyiab?
Khoom yog ib ntawm cov peb lub xeev ntawm teeb meem thiab, tsis zoo li cov kua los yog gases, lawv muaj ib tug meej cov duab uas tsis yooj yim rau hloov. txawv cov khoom khib nyiab muaj cov khoom tshwj xeeb xws li kev ncab, lub zog, lossis hardness uas ua rau lawv muaj txiaj ntsig zoo rau kev ua haujlwm sib txawv. Feem ntau cov khoom khib nyiab yog ua los ntawm cov pob zeb me me.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov teeb meem thiab lub zog hauv ib qho ecosystem?
Muaj qhov sib txawv tseem ceeb hauv txoj kev lub zog thiab cov teeb meem ntws los ntawm ib qho ecosystem. Cov teeb meem ntws los ntawm ecosystem nyob rau hauv daim ntawv ntawm cov tsis muaj sia nyob cov as-ham tseem ceeb rau cov kab mob nyob. Yog li koj pom, teeb meem yog rov ua dua tshiab hauv ecosystem. Tsis zoo li qhov teeb meem, lub zog tsis rov siv dua los ntawm qhov system
Dab tsi xim yog phenol liab nyob rau hauv ib qho kev daws teeb meem?
Phenol liab yog cov kua qaub-puag qhia. Nws yog tsim los ntawm condensing ob moles ntawm phenol nrog ib tug mole ntawm o-sulfobenzoic acid anhydride. Phenol Liab yog siv los ua pH qhia hauv daim ntawv thov kab lis kev cai ntawm tes. Kev daws ntawm phenol liab yuav muaj xim daj ntawm pH ntawm 6.4 lossis qis dua thiab xim liab ntawm pH
Dab tsi yog qhov txawv ntawm qhov ntws ntawm cov teeb meem thiab lub zog hauv ib qho ecosystem?
Muaj qhov sib txawv tseem ceeb hauv txoj kev lub zog thiab cov teeb meem ntws los ntawm ib qho ecosystem. Cov teeb meem ntws los ntawm ecosystem hauv daim ntawv ntawm cov khoom noj uas tsis muaj sia nyob uas tseem ceeb rau cov kab mob nyob. Yog li koj pom, teeb meem yog rov siv dua hauv ecosystem. Tsis zoo li qhov teeb meem, lub zog tsis rov siv dua los ntawm qhov system
Dab tsi yog qhov concentration ntawm hydronium ions nyob rau hauv ib qho kev daws teeb meem?
Cov dej ntshiab yog suav tias yog nruab nrab thiab qhov concentration ntawm hydronium ion yog 1.0 x 10-7 mol / L uas yog sib npaug rau hydroxide ion concentration
Dab tsi yog qhov teeb meem ntawm lub teeb nyob rau hauv lub ntuj hmo ntuj hu ua?
Gegenschein, tseem hu ua Counterglow, oval thaj ntawm faint luminosity raws nraim rau lub hnub nyob rau hauv lub hmo ntuj. Lub thaj ntawm lub teeb yog li faint nws tuaj yeem pom tsuas yog thaum tsis muaj lub hli, nyob deb ntawm lub nroog teeb, thiab nrog lub qhov muag yoog rau qhov tsaus ntuj