Cov txheej txheem:

Vim li cas cov cua sov yog kev hloov tshuaj?
Vim li cas cov cua sov yog kev hloov tshuaj?

Video: Vim li cas cov cua sov yog kev hloov tshuaj?

Video: Vim li cas cov cua sov yog kev hloov tshuaj?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Ib qho exothermic tshuaj tiv thaiv yog a tshuaj tiv thaiv uas tso tawm kub . Nws muab net zog rau nws ib puag ncig. Ntawd yog, lub zog xav tau los pib lub tshuaj tiv thaiv yog tsawg tshaj li lub zog tso tawm. Thaum nruab nrab uas lub tshuaj tiv thaiv yog qhov chaw sau kub , cov tshuaj tiv thaiv yog exothermic.

Raws li kev sib raug zoo, yog cua sov hloov tshuaj?

Yog hais tias kub nce, raws li nws ua nyob rau hauv feem ntau cov tshuaj tiv thaiv , a tshuaj hloov zoo li yuav tshwm sim. Qhov no txawv ntawm lub cev kub hloov . Thaum lub cev kub hloov , ib yam khoom, xws li dej yog rhuab. Qhov no tshuaj tiv thaiv tsim kub raws li ib yam khoom thiab yog (heev) exothermic.

Ib tug kuj yuav nug, puas yog cua sov hlau hloov tshuaj? Lub cev thiab Kev hloov tshuaj . Lub cev hloov yog a hloov hauv qhov khoom kev hloov daim ntawv tab sis khaws nws tib yam tshuaj muaj pes tsawg leeg (reversible). *Yog koj kub ib hlau bar kom txog thaum nws glows liab kub, nws tseem chemically tib yam hlau . Cov hlau tsis tau hloov ua lwm yam.

Hais txog qhov no, vim li cas thiaj muaj kev hloov pauv hauv tshuaj lom neeg?

Lub zog hloov hauv a tshuaj tiv thaiv yog vim qhov sib txawv ntawm cov nyiaj khaws cia tshuaj lub zog ntawm cov khoom thiab cov reactants. Qhov no khaws cia tshuaj zog, or kub cov ntsiab lus, ntawm qhov system yog hu ua nws enthalpy.

10 chemical pauv piv txwv yog dab tsi?

Kaum piv txwv ntawm kev hloov tshuaj lom neeg yog:

  • Hlawv cov thee, ntoo, ntawv, kerosene, thiab lwm yam.
  • Tsim cov curd los ntawm mis nyuj.
  • Electrolysis ntawm dej los tsim hydrogen thiab oxygen.
  • Rusting ntawm hlau.
  • Kev tawg ntawm cracker.
  • Ua noj ua haus.
  • Kev zom zaub mov.
  • Germination ntawm noob.

Pom zoo: