Essential Chemistry for IGCSE - Chemical Changes (Section 2 - No. 12)
What does the 'activation energy' represent in a chemical reaction?
The amount of energy released during the reaction.
The minimum energy required for the reaction to start.
The difference in energy between reactants and products.
The amount of energy absorbed during the reaction.
Explanation
Activation energy is the minimum energy needed to initiate a chemical reaction.
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