Energie en verandering Flashcards

1
Q

Reaksiewarmte

A

energie geabsorbeer of vrygestel in ‘n chemiese reaksie. reaksiewarmte = Eprodukte - Ereaktante

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2
Q

Eksotermiese reaksie

A

Reaksies wat energie vrystel dws reaksiewamte is kleiner as 0. Eprodukte

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3
Q

Endotermiese reaksie

A

Reaksies wat energie absorbeer dws reaksiewarmte is groter as 0. Eprodukte>Ereaktante

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4
Q

Aktiveringsenergie

A

minimum energie benodig vir reaksie om plaas te vind

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5
Q

Geaktiveerde kompleks

A

onstabiele oorgangstoestand van reaktante na produkte

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6
Q

Reaksietempo

A

verandering in konsentrasie v reaktante of produkte per eenheidstyd

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7
Q

Botsingsteorie

A

model wat reaksietempo verduidelik agv deeltjies wat met sekere minimum energie bots

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8
Q

Positiewe katalisator

A

stof wat tempo v chemiese reaksie verhoog sonder om self permanente verandering te ondergaan

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9
Q

Katalisator

A

Tempo v reaksie verhoog deur alternatiewe roete van laer aktiveringsenergie te verskag, dit verlaag dus netto aktiveringsenergie

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10
Q

Faktore wat reaksietempo en botsingsteorie beinvloed

A
  • aard vd reaktante
  • temperatuur waarby reaksie uitgevoer word
  • konsentrasie vd reaktante in oplossing
  • reaksie-oppervlakte
  • katalisator
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