How does increasing the surface area affect the motions of the molecules?

a
When the surface area is at a maximum, the molecules all are allowed to react at once.
b
When the surface area is at a minimum, the molecules all are allowed to react at once.

How does surface area affect the rate of a chemical reaction?

a
The reaction rate is quicker when the molecules are at their maximum surface area.
b
The reaction rate is quicker when the molecules are at their minimum surface area.


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