Video: Dab tsi yog qhov nro hauv cov lus yooj yim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntog nro yog ib qho cuam tshuam qhov twg nto ntawm cov kua yog muaj zog. Cov cuab yeej no yog tshwm sim los ntawm cov molecules nyob rau hauv cov kua tau attracted rau ib leeg (cohesion), thiab yog lub luag hauj lwm rau ntau yam ntawm tus cwj pwm ntawm cov kua. Ntog nro muaj qhov dimension ntawm quab yuam ib unitlength, los yog lub zog ntawm ib chav tsev cheeb tsam.
Tsis tas li ntawd, dab tsi yog qhov yooj yim txhais ntawm qhov nro ntawm qhov chaw?
Txhais qhov nro nro .: lub attractiveness exerted rau ntawm nto cov molecules ntawm cov kua los ntawm lawv cov molecules hauv qab uas nyiam kos cov nto moleculesin mus rau tej yam ntawm cov kua thiab ua rau cov kua xav tias tus shapehaving qhov tsawg tshaj plaws nto cheeb tsam.
Tsis tas li ntawd, qhov nro nyob rau hauv chemistry yog dab tsi? Nto Ntog Txhais. Surfacetension yog ib qho khoom vaj khoom tsev sib npaug ntawm cov zog perunit cheeb tsam tsim nyog los nthuav cov nto ntawm cov kua. Ntog nro cov rog yog vim muaj kev sib cuam tshuam ntawm cov kua molecules ntawm cov kua sab nraud.
Hais txog qhov no, qhov nro ntawm qhov chaw piav qhia nrog piv txwv li cas?
Rau piv txwv , cov molecules ntawm ib tug tee dej yog tuav ua ke los ntawm cohesive rog, thiab tshwj xeeb tshaj yog muaj zog cohesive rog ntawm lub nto ua nto ntom ntom . Thaum lub zog txaus nyiam nyob nruab nrab ntawm qhov tsis zoo li molecules, lawv tau hais tias yog cov nplaum nplaum.
Yam dab tsi cuam tshuam rau saum npoo?
Surfacetension yog tshwm sim los ntawm cov teebmeem ntawm intermolecular rog atthe interface. Ntog nro nyob ntawm qhov xwm txheej ntawm cov kua dej, qhov chaw ib puag ncig thiab qhov kub thiab txias. Cov kua dej yog cov molecules loj txaus nyiam intermolecular rog yuav muaj alarge nto nro.
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