Essential Chemistry for IGCSE - Rate Of Reaction (Section 3 - No. 49)

In the context of surface area and reaction rates, what is the effect of using smaller particles (e.g., powder) compared to larger pieces of the same reactant?
Smaller particles decrease the rate of reaction.
Smaller particles have no effect on the rate of reaction.
Smaller particles increase the rate of reaction.
Smaller particles make it impossible for the reaction to occur

Explanation

Smaller particles offer a larger surface area for the reaction to occur, which increases the chances of collisions and thus increases the rate of reaction.

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