Final answer:
Increasing the surface area of the sugar cubes will make the sugar dissolve faster in water. Reducing the temperature slows down the dissolving process. Adding more sugar cubes does not affect the rate of dissolution.
Step-by-step explanation:
The sugar will dissolve faster if the surface area of the sugar cubes is increased. Increasing the surface area exposes more of the sugar to the water, allowing more solvent molecules to come into contact with the solute. This increases the frequency of collisions and speeds up the dissolution process.
Reducing the temperature, on the other hand, slows down the dissolving process. Lower temperature decreases the kinetic energy of the water molecules, reducing their ability to break the bonds between the sugar molecules. Therefore, the sugar will dissolve slower in colder water.
Adding more sugar cubes, does not affect the rate of dissolution. While it increases the amount of solute in the solution, it does not change the surface area or the temperature, which are the factors that mainly influence the rate of dissolution.