Video: Yog vim li cas dej molecules attracted rau ib leeg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntau precisely, qhov zoo thiab tsis zoo nqi ntawm hydrogen thiab oxygen atoms uas tsim dej molecules ua rau lawv attracted rau ib leeg . Sib nqus ncej nyiam ib lwm zoo li zoo them atoms nyiam negatively them atoms nyob rau hauv dej molecules.
Xav txog qhov no, dab tsi ua rau cov dej molecules sib nyiam?
Hydrogen Bonds Cov nqi sib tw nyiam ib lwm . Qhov zoo me ntsis nqi ntawm hydrogen atoms hauv a dej molecule nyiam me ntsis tsis zoo nqi ntawm cov pa atoms ntawm lwm cov dej molecules . Lub zog me me ntawm kev nyiam hu ua hydrogen bond.
Qhov thib ob, yog vim li cas dej yog ib tug polar molecule? A dej molecule , vim nws cov duab, yog a polar molecule . Ntawd yog, nws muaj ib sab uas tau them nyiaj zoo thiab ib sab uas raug them tsis zoo. Cov molecule yog tsim los ntawm ob lub atom hydrogen thiab ib qho oxygen atom. Cov kev sib txuas ntawm cov atoms hu ua covalent bonds, vim hais tias cov atoms sib koom electrons.
Tom qab ntawd, lo lus nug yog, yuav ua li cas molecules nyiam ib leeg?
Atoms nrog tus nqi zoo yuav yog nyiam rau negatively charged atoms tsim ib molecule . Qhov kev sib txuas ntawm atoms no yog tus yuam sij rau yuav ua li cas molecules cuam tshuam nrog ib leeg . Positioning ntawm atoms nyob rau hauv a molecule tuaj yeem muab nws polarity.
Vim li cas adhesion tshwm sim hauv dej?
Cohesion tuav hydrogen bonds ua ke los tsim qhov nro ntawm qhov chaw dej . Txij li thaum dej yog attracted rau lwm cov molecules, nplaum zog rub dej mus rau lwm cov molecules.
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
Puas yog dej molecules nyiam rau lwm cov polar molecules?
Raws li qhov tshwm sim ntawm dej polarity, txhua tus dej molecule attracts lwm cov dej molecules vim yog cov nqi sib txawv ntawm lawv, tsim hydrogen bonds. Dej kuj nyiam, lossis nyiam, lwm cov polar molecules thiab ions, suav nrog ntau cov biomolecules, xws li qab zib, nucleic acids, thiab qee cov amino acids
Yuav ua li cas thaum nthwv dej cuam tshuam rau ib leeg?
Wave cuam tshuam yog qhov tshwm sim uas tshwm sim thaum ob nthwv dej sib ntsib thaum taug kev raws tib qhov nruab nrab. Kev cuam tshuam ntawm nthwv dej ua rau qhov nruab nrab coj mus rau ib qho duab uas tshwm sim los ntawm kev cuam tshuam ntawm ob tus neeg nthwv dej ntawm qhov nruab nrab ntawm qhov nruab nrab
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
Lub ntuj puas xiav vim dej hiav txwv los yog dej hiav txwv xiav vim lub ntuj?
'Lub hiav txwv zoo li xiav vim liab, txiv kab ntxwv thiab daj (ntev wavelength teeb) yog absorbed ntau zog los ntawm dej tshaj yog xiav (luv wavelength light). Yog li thaum lub teeb dawb ntawm lub hnub nkag mus rau hauv dej hiav txwv, nws feem ntau yog xiav uas tau rov qab los. Ib yam li ntawd, lub ntuj xiav.'