Match the factors which affect the rate of dissolving/dissociation/diffusion. 1. increased surface area matching polarity 2. like dissolves like rate proportional to kinetic energy 3. temperature finely divided solute 4. stirring spreads solute throughout solution

The pairs would be:

1. increased surface area  
finely divided solute 
Increased surface area of the solute will make the solute finely divided. Since the area of the solute that touches the solvent is higher. Since the area of work is bigger, then the work would be faster.

2. like dissolves like 
matching polarity
Like dissolve like because a matter tends to clump up with the same kind of polarity. Water is polar and will be a good solvent for a polar solute because they can form hydrogen bond which makes it easier to spread.

3. temperature 
rate proportional to kinetic energy 
The temperature rate proportional to the kinetic energy, which makes the molecules move faster. A faster movement will make it spread easier. That is why higher temperature will result in higher solubility and faster rate of dissolving


4. stirring 
spreads solute throughout solution
Stirring will help spread the solute. When the solution is not stirred, the solute that dissolved will be concentrated near the solute. This will decrease the rate of dissolving around it. Stirring help by moving the dissolved molecule away from the solute, makes the solute exposed more to the solvent.

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