Reversibility & Equilibrium (OCR GCSE Chemistry A, Combined (Gateway Science Suite)): Quizzes
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10 questions from this quiz
In reversible reactions, how do energy changes in forward and backward reactions relate?
In reversible reactions, how do energy changes in forward and backward reactions relate?
They are opposing
If the forward reaction is exothermic, what is the backward reaction?
If the forward reaction is exothermic, what is the backward reaction?
Endothermic
If the forward reaction is endothermic, what is the backward reaction?
If the forward reaction is endothermic, what is the backward reaction?
Exothermic
What does an exothermic reaction do?
What does an exothermic reaction do?
Transfers energy to surroundings
When does an exothermic reaction occur?
When does an exothermic reaction occur?
More energy released forming bonds than absorbed
What does an endothermic reaction do?
What does an endothermic reaction do?
Absorbs energy from surroundings
When does an endothermic reaction occur?
When does an endothermic reaction occur?
More energy needed to break bonds than released
What type of reaction is + → (forward)?
What type of reaction is + → (forward)?
Exothermic
What type of reaction is → + (backward)?
What type of reaction is → + (backward)?
Endothermic
How does the energy change of the reverse reaction compare to the forward reaction?
How does the energy change of the reverse reaction compare to the forward reaction?
Always opposite