Video: Vim li cas hydrogen bonding tseem ceeb rau dej cov khoom?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hydrogen bonds hauv dej muab ntau yam txiaj ntsig zoo rau dej : cohesion (tuav dej molecules ua ke), cov cua kub tshwj xeeb (nqus cua sov thaum tawg, tso cua sov thaum tsim; txo qhov kub hloov pauv), kub kub ntawm vaporization (ntau hydrogen bonds yuav tsum tau tawg thiaj li yuav evaporate dej )
Kuj nug, hydrogen bonds cuam tshuam rau dej li cas?
Cov dej siab kub muaj peev xwm yog a vaj tse tshwm sim los ntawm hydrogen kev sib raug zoo ntawm dej molecules. Thaum tshav kub yog absorbed, hydrogen bonds tawg thiab dej molecules ua tau txav tau ywj siab. Thaum kub ntawm dej txo, cov hydrogen bonds raug tsim thiab tso tawm ntau lub zog.
Ib sab saum toj no, yuav ua li cas tshwm sim tsis muaj hydrogen bonding? Hydrogen bonds ua kom qhov txo qis ntawm qhov kub siab tshaj plaws hauv cov dej loj. Txawm li cas los xij, tsis muaj hydrogen bonds , dej hauv dej hiav txwv thiab pas dej yuav pib sai sai vim qhov poob ntawm qhov kub npau npau - ua rau muaj teeb meem loj rau lub neej hauv ntiaj teb.
Kuj paub, vim li cas hydrogen bonding hauv dej tseem ceeb rau lub neej?
Lub xub ntiag ntawm hydrogen bonds kuj ua dej molecules ntau 'nplaum' los yog nyob rau hauv scientific cov ntsiab lus cohesive thiab nplaum. Cov nqi me me ntawm cov dej molecules tso cai rau lawv los ua ke uas yog vim li cas dej muaj 'daim tawv' uas cov kab me tuaj yeem taug kev, thiab piav qhia vim li cas dej tuaj yeem nqus tau straw yooj yim heev.
Dab tsi yog 3 yam tseem ceeb ntawm cov dej?
Lub ntsiab cov khoom ntawm dej yog nws polarity, cohesion, adhesion, nto nro, siab tshwj xeeb kub, thiab evaporative txias. A dej molecule yog me ntsis them rau ntawm ob kawg. Qhov no yog vim muaj oxygen ntau electronegative tshaj hydrogen.
Pom zoo:
Yuav ua li cas hydrogen bonding ntawm cov dej molecules pab piav qhia dej lub peev xwm nqus tau ntau lub zog ua ntej evaporation?
Cov hydrogen bonds hauv dej tso cai rau nws nqus thiab tso tawm lub zog cua sov qeeb dua li ntau lwm yam khoom. Qhov kub thiab txias yog ib qho kev ntsuas ntawm qhov kev txav (kinetic zog) ntawm cov molecules. Raws li cov lus tsa suab nce, lub zog yog siab dua thiab yog li kub siab dua
Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
Yuav ua li cas yog vim li cas tus qauv ntawm ib qho enzyme tseem ceeb heev rau nws txoj haujlwm hauv cov khoom muaj sia?
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Vim li cas hydrogen bonds tseem ceeb rau cov roj ntsha molecules?
Hydrogen bonding yog qhov tseem ceeb hauv ntau cov txheej txheem tshuaj. Hydrogen bonding yog lub luag haujlwm rau dej cov kuab tshuaj tshwj xeeb. Hydrogen bonds tuav cov kab sib txuas ntawm DNA ua ke, thiab lawv yog lub luag haujlwm rau kev txiav txim siab peb-dimensional qauv ntawm folded proteins nrog rau cov enzymes thiab cov tshuaj tiv thaiv
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom