Probably because the surface area of the sugar granules is larger, more sugar molecules are exposes to water at once.
Sucrose molecules are the ones that make up sugar cubes, sugar granules and powdered sugar.
Let's imagine the following objects first: Sugar cubes are solid blocks, each with a comparatively larger volume. Granulated sugar is fine and particulate, and each grain has a very small volume. It is only logical that when comparing one block of sugar to one grain of sugar, that the grain dissolves faster because it has a smaller volume (less to dissolve), and the surface area to volume ratio is much higher.
To dissolve sugar cubes, simply place them in a liquid (such as water, coffee, or tea) and stir until the cubes break down and the sugar dissolves. The smaller the sugar cubes, the faster they will dissolve. Heat can also help speed up the process.
Yes
Liquid
Sugar in something cold would dissolve, if you put sugar into something hot then it would melt and then dissolve.
The sugar cubes soften when placed in the water and begin to dissolve. The sugar cube in the hot water dissolves the fastest. Sugar will dissolve faster when you stir the solution quickly because the act of stirring increases kinetic energy which increases the temperature.
Sugar cubes would dissolve faster when crushed rather than left whole, regardless of whether the water used is hot or cold. Crushing the sugar cubes increases the surface area of the sugar particles exposed to the water, allowing for quicker dissolution.
it does because it is white and white dissolves!
Hot water
My experience is the finer the grain, the quicker it dessolves. Make some scientific sense too as, to dissolve, it must be broken down. So if the solute (sugar) is already partially broken down mechanically, there's less "work" for the solvent (the liquid you are dissolving it into) in creating the solution. So, powered sugar.
The sugar granules were compacted into cubes.