Reactions involving solids only take place on the surface of the solid.
If the solid has a greater surface area (e.g being split up into several pieces), the reaction will speed up
This is because, there is an increased area for the reactant particles to collide with.
The smaller the pieces, the larger the surface area (contrary to what you may think, but it does make sense- smaller but less space, so likely to bump into each other).
This means more collisions and a greater chance of reaction.
The collisions are more frequent, but not harder!
Comments
No comments have yet been made