Qhov sib txawv tseem ceeb ntawm molecular motion thiab diffusion yog qhov kev txav ntawm molecular yog kev txav ntawm cov molecules hauv ib yam khoom uas tsis muaj kev cuam tshuam sab nraud whereas diffusion yog kev txav ntawm cov molecules los ntawm thaj chaw siab mus rau thaj tsam ntawm qis concentration.
Molecular motion thiab diffusion tseem ceeb heev raws li kev piav qhia rau tus cwj pwm ntawm cov tshuaj molecules. Txhua yam khoom muaj cov khoom; atoms, ions los yog molecules. Feem ntau, peb tuaj yeem nrhiav cov molecules tsis yog atoms lossis ions vim tias cov molecules ruaj khov dua. Ntxiv mus, txhua yam teeb meem yeej ib txwm nyob rau hauv ib qho ntawm peb lub xeev ntawm teeb meem; gas, kua los yog khoom lub xeev. Kev txav ntawm cov molecules nyob rau hauv peb lub xeev no tau piav qhia los ntawm molecular motion thiab diffusion.
Kev Molecular Molecular yog dab tsi?
Molecular motion yog qhov txav ntawm cov molecules hauv ib yam khoom uas tsis muaj kev cuam tshuam sab nraud. Qhov no txhais tau hais tias nws yog qhov txav ntawm cov khoom hauv ib yam khoom ntawm no thiab muaj randomly. Qhov kev txav no tsuas yog tshwm sim hauv thaj tsam ntawm cov khoom. Cov kev txav no ua rau muaj kev sib tsoo molecular, uas molecules colloid nrog ib leeg. Cov kev sib tsoo no ua rau bouncing ntawm molecules.
Vim tias cov molecules ntawm cov khoom ntim tau zoo, cov molecular motions hauv cov khib nyiab yog tsawg heev. Tab sis nyob rau hauv cov kua, muaj ntau zog thiab sib tsoo thaum piv nrog cov khib nyiab. Hauv cov pa roj, cov molecules muaj qhov chaw loj rau kev txav ntawm molecular thiab tseem muaj kev sib tsoo siab. Yog tias peb siv ib qho kev cuam tshuam sab nraud ntawm cov khoom, cov kev txav mus los hloov raws li. Piv txwv li: Yog tias peb nce qhov kub ntawm cov pa roj, qhov ceev ntawm lub zog nce, yog li kev sib tsoo kuj tseem siab.
Diffusion yog dab tsi?
Diffusion yog qhov txav ntawm cov molecules los ntawm thaj tsam ntawm qhov siab mus rau qhov tsis tshua muaj siab ntawm qhov concentration gradient. Cov kev txav no tshwm sim hauv tib txoj kev daws teeb meem. Cov yam ntxwv uas cuam tshuam rau qhov concentration gradient cuam tshuam rau qhov diffusion thiab.
Daim duab 01: Diffusion hauv daim duab yooj yim
Cov lus tsa suab no xaus thaum qhov sib npaug ntawm ob thaj chaw sib npaug ntawm txhua qhov chaw. Qhov no txhais tau tias qhov kev txav no tshwm sim kom txog thaum lub concentration gradient ploj mus. Tom qab ntawd cov molecules kis mus rau txhua qhov chaw hauv cov tshuaj.
Qhov txawv ntawm Molecular Motion thiab Diffusion yog dab tsi?
Molecular motion yog qhov txav ntawm cov molecules hauv ib yam khoom uas tsis muaj kev cuam tshuam sab nraud. Nws yog random tsab ntawv tsa suab. Tsis tas li ntawd, lwm yam tseem ceeb tuaj yeem cuam tshuam qhov kev txav no, piv txwv li qhov kub thiab txias. Diffusion yog qhov txav ntawm cov molecules los ntawm thaj tsam ntawm qhov siab mus rau qhov tsis tshua muaj siab ntawm qhov concentration gradient. Yog li ntawd, nws tsis yog ib qho random tsab ntawv tsa suab. Cov yam ntxwv cuam tshuam rau qhov concentration gradient cuam tshuam rau kev txav ntawm cov molecules. Qhov no yog qhov sib txawv tseem ceeb ntawm molecular motion thiab diffusion.
Summary – Molecular Motion vs Diffusion
Molecular motions thiab diffusion tseem ceeb heev hauv kev piav qhia tus cwj pwm ntawm cov khoom hauv cov khoom. Qhov sib txawv ntawm molecular motion thiab diffusion yog tias cov molecular motion yog lub zog ntawm molecules nyob rau hauv ib yam khoom uas tsis muaj kev cuam tshuam sab nraud whereas diffusion yog lub zog ntawm molecules los ntawm ib cheeb tsam ntawm siab concentration mus rau ib cheeb tsam ntawm qis concentration.
