Hot water. Hot water can also dissolve slightly more sugar than cold water can.
Sugar should dissolve faster in a liquid.
The difference is minimal; the white sugar dissolve a bit faster beacause doesn't contain impurities.
Yes
Factors that cause sugar to dissolve faster include increasing the surface area of the sugar (finer crystals dissolve faster), stirring or agitating the solution, raising the temperature of the solvent (hot water dissolves sugar faster than cold water), and increasing the concentration of the solvent (higher concentration can dissolve more sugar).
Sugar is less dense than salt, leading to it dissolving faster.
Sugar dissolves faster than salt in water. Salt has stronger bonds than sugar. That what makes sugar dissolve faster (because it has weaker bonds and structure than salt)
No
Heat it
Sugar is more soluble.
Sugar will dissolve faster in hot water than it will in cold water.
Even in cold water sugar will dissolve eventually, but it does dissolve faster in hot water. Hot water molecules move faster than cold water molecules and therefore can more easily break sugar molecules out of solid sugar and into solution.
A sugar-free mint would likely dissolve faster than a regular mint because sugar can take longer to dissolve than other ingredients in the mint. The absence of sugar allows the sugar-free mint to dissolve more quickly in comparison.