Video: Yuav ua li cas koj twv seb qhov kev tshwm sim yog endothermic los yog exothermic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Yog qib zog ntawm cov reactants siab dua cov qib zog ntawm cov khoom lag luam tshuaj tiv thaiv yog exothermic (Lub zog tau raug tso tawm thaum lub sijhawm tshuaj tiv thaiv ). Yog qib zog ntawm cov khoom yog siab tshaj lub zog theem ntawm cov reactants nws yog ib qho endothermic tshuaj tiv thaiv.
Tsuas yog li ntawd, qhov twg ntawm cov tshuaj tiv thaiv yog exothermic?
Ib exothermic tshuaj tiv thaiv yog tshuaj tshuaj tiv thaiv nyob rau hauv uas tsawg zog yog xav tau los rhuav cov bonds nyob rau hauv lub reactants tshaj tawm thaum tshiab bonds tsim nyob rau hauv cov khoom. Thaum ib exothermic tshuaj tiv thaiv , lub zog yog tas li muab tawm, feem ntau nyob rau hauv daim ntawv ntawm tshav kub. Tag nrho cov combustion Cov tshuaj tiv thaiv yog cov tshuaj tiv thaiv exothermic.
Tsis tas li ntawd, qhov piv txwv ntawm endothermic yog dab tsi? Cov no piv txwv tuaj yeem sau ua tshuaj lom neeg, tab sis feem ntau suav tias yog endothermic los yog cov txheej txheem kub-absorbing: Melting ice cubes. Melting khoom ntsev. Evaporating kua dej. Hloov Frost rau dej vapor (melting, boiling, thiab evaporation, feem ntau, yog endothermic txheej txheem.
Tom qab ntawd, ib tug kuj yuav nug, yog Boiling Water endothermic los yog exothermic?
Peb txhua tus tuaj yeem txaus siab rau qhov ntawd dej tsis spontaneously boil ntawm chav tsev kub; xwb peb yuav tsum tau cua sov nws. Vim peb yuav tsum ntxiv cua sov, boiling dej yog ib txoj kev uas chemists hu endothermic . Kom meej meej, yog tias qee cov txheej txheem xav tau cua sov, lwm tus yuav tsum muab cov cua sov thaum lawv ua. Cov no yog hu ua exothermic.
Dab tsi yog qhov sib npaug rau cov tshuaj tiv thaiv endothermic?
Qhov kev sib npaug dav dav rau qhov tshuaj tiv thaiv endothermic yog: Reactants + Zog → khoom. Hauv cov tshuaj tiv thaiv endothermic, qhov kub ntawm cov khoom yog feem ntau qis dua qhov kub ntawm cov khoom reactants.
Pom zoo:
Koj ua si twv seb qhov kev sib raug zoo li cas?
Tus tsim tawm: Omar Wagih
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