Video: Puas yog cov kev cuam tshuam cuam tshuam ib txwm endothermic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov txheej txheem ntawm yaj yog endothermic thaum lub zog tsawg dua tso tawm thaum cov dej molecules "bond" rau cov kuab tshuaj dua li siv los rub cov kua dej sib nrug. Vim tias lub zog tsawg dua yog tso tawm ntau dua li siv, cov molecules ntawm cov tshuaj txav qeeb dua, ua rau qhov kub thiab txias.
Khaws qhov no hauv kev txiav txim siab, puas yog cov txheej txheem kev sib cais ntawm ntsev endothermic lossis exothermic?
Teb thiab piav qhia: Dissolving ntsev hauv dej yog endothermic. Qhov no txhais tau hais tias thaum ntsev yaj nyob rau hauv dej qhov kub ntawm cov tshuaj feem ntau yog qis dua me ntsis
Tsis tas li ntawd, kev sib cais puas yog qhov tshwm sim? Vim li cas Dissolving Salt yog ib qho tshuaj hloov pauv yog li ntawd, yaj ntsev hauv dej yog kev hloov tshuaj. Piv txwv li, yaj covalent compound zoo li qab zib tsis ua rau muaj tshuaj lom neeg tshuaj tiv thaiv . Thaum qab zib yog yaj , cov molecules tawg thoob plaws hauv dej, tab sis lawv tsis hloov lawv cov tshuaj lom neeg.
Ua raws li qhov kev pom no, puas yog kev sib cais ntawm calcium chloride endothermic lossis exothermic?
Yog li ntawd, kev tawg ntawm poov tshuaj tshuaj chloride yog ib endothermic txheej txheem. Cov dissolution ntawm calcium chloride yog ib exothermic txheej txheem.
Yuav ua li cas koj paub yog hais tias ib qho tshuaj tiv thaiv endothermic?
Hauv kev sib npaug tshuaj, qhov chaw ntawm lo lus "kub" tuaj yeem siv tau sai txiav txim seb tus cov tshuaj tiv thaiv yog endothermic los yog exothermic. Yog cua sov yog tso tawm raws li cov khoom ntawm cov tshuaj tiv thaiv , cov tshuaj tiv thaiv yog exothermic. Yog Thaum tshav kub kub yog teev nyob rau sab ntawm cov reactants, lub cov tshuaj tiv thaiv yog endothermic.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm kev tawm hauv cov crystal kev loj hlob tsis muaj kev cuam tshuam?
Nws yog ib qho tseem ceeb uas yuav tsum tau ua kom qhov kev sim npog kom tsis txhob muaj plua plav thiab lwm yam khoom siv tsis xav tau los ntawm kev cuam tshuam kev loj hlob siv lead ua. Saib xyuas kev tsim cov muaju ntawm cov hlua txhua hnub. Sab laug tsis muaj kev cuam tshuam, cov muaju yuav tsum loj dua txhua hnub kom txog thaum cov tshuaj qhuav qhuav
Lub kaum sab xis ntawm qhov cuam tshuam cuam tshuam li cas rau cov tsos ntawm cov ntshav?
Thaum cov ntshav raug cuam tshuam, cov tee dej tau tawg los ntawm huab cua. Thaum cov tee dej no tawm tsam ib qho chaw, cov duab ntawm cov stain hloov nyob ntawm lub kaum sab xis ntawm qhov cuam tshuam, kev tshaj tawm, kev ncua deb thiab hom ntog cuam tshuam. Raws li lub kaum sab xis ntawm qhov cuam tshuam hloov, yog li qhov tshwm sim ntawm qhov tshwm sim stain
Dab tsi yog qhov sib txawv ntawm cov rog yuav cuam tshuam rau kev sib cuam tshuam ntawm cov dej molecules?
1 Teb. Qhov tseeb, dej muaj tag nrho peb hom kev sib xyaw ua ke, nrog qhov muaj zog tshaj plaws yog hydrogen bonding. Txhua yam muaj London dispersion yuam cov kev sib cuam tshuam tsis muaj zog yog ib ntus dipoles uas tsim los ntawm kev hloov ntawm electrons nyob rau hauv ib lub molecule
Dab tsi yog qhov txawv ntawm kev cuam tshuam kev cuam tshuam thiab kev cuam tshuam cuam tshuam?
Paub qhov txawv ntawm kev cuam tshuam kev tsim kho thiab kev cuam tshuam puas tsuaj. Kev tsim kev cuam tshuam tshwm sim thaum lub crests ntawm ob nthwv dej ntxiv ua ke. Kev cuam tshuam kev puas tsuaj tshwm sim thaum lub crest ntawm ib yoj raug txo los ntawm lub trough ntawm lwm tus
Dab tsi yog qee qhov piv txwv ntawm kev cuam tshuam tsis zoo ntawm tib neeg ib puag ncig kev cuam tshuam?
Kev ua liaj ua teb tuaj yeem cuam tshuam tsis zoo rau peb ib puag ncig, suav nrog kev poob ntawm biodiversity, dej paug, kev hloov pauv huab cua, av yaig thiab muaj kuab paug