Answer
To answer the questions posed in the activity, the time required for the complete dissolving of the sugar in each cup must be compared. The reaction rate of the ground sugar will be faster than the whole sugar cube. The collision theory explains that the smaller particles of the ground sugar have more surface area, allowing for more collisions with the water molecules, resulting in a faster reaction rate. The fact that the water was warm and the stirring may have affected the outcome of the experiment, as the heat energy and stirring motion can increase the rate of reaction.