Question

what is the activation energy of a reaction? (1 point)
○ the minimum energy required by the reactants for the reaction to proceed
○ the amount of energy produced
○ the maximum energy used by the reactants as the reaction proceeds
○ the amount of energy lost

Explanation:

To determine the correct definition of activation energy, we analyze each option:

• Option 1: Activation energy is defined as the minimum energy that reactant molecules must possess to undergo a chemical reaction. This matches the scientific definition.
• Option 2: Activation energy is not about energy produced; energy produced relates to enthalpy change or other energy - output - related concepts in reactions.
• Option 3: Activation energy is not the maximum energy used by reactants. The reactants need a minimum energy to start the reaction, not a maximum usage.
• Option 4: Activation energy is not about energy lost. Energy lost is a different concept, like energy dissipated as heat in some reactions.

Answer:

A. the minimum energy required by the reactants for the reaction to proceed