Puas yog cov kev cuam tshuam cuam tshuam ib txwm endothermic?
Puas yog cov kev cuam tshuam cuam tshuam ib txwm endothermic?

Video: Puas yog cov kev cuam tshuam cuam tshuam ib txwm endothermic?

Video: Puas yog cov kev cuam tshuam cuam tshuam ib txwm endothermic?
Video: Zoo Phem Los Yog Niam Txiv - Koos Loos 2024, Kaum ib hlis
Anonim

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.

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