what must happen before a chemical reaction can begin?\nthe activation energy must be exceeded.\nthe…
what must happen before a chemical reaction can begin?\nthe activation energy must be exceeded.\nthe activation energy must be reached.\nthe concentrations of products and reactants must be equal.\nthe concentration of reactant molecules must be reduced.
Answer
Brief Explanations:
Activation energy is the minimum energy required for a chemical reaction to start. Once this energy threshold is reached, reactant molecules can transform into products. Equal concentrations of products and reactants relate to equilibrium, not the start of a reaction. Reducing reactant molecule concentration doesn't initiate a reaction.
Answer:
The activation energy must be reached.