Why does hot water dissolve sugar quicker than cold water?

Answer 1

"More stirring might also increase the amount of sugar that dissolves and different sugars might dissolve in different amounts, so to insure a fair test I want to keep these variables the same for each cup of water."

Answer 2

The higher energy in the system breaks down the solute molecules and allows wider spaces between the water molecules, allowing the molecules to enter solution. Some solvents can hold more of a given solute at higher temperatures.

Answer 3

it doesn't absorb more it just dissolves faster. the water particle are moving faster and mix in the sugar particles.

Actually, between 50 and 90 degrees celsius, the solubility of sugar (sucrose) increases by over 60%. Heating a solution of a solid makes it easier for the particles of solid to move between the solution and the solid phase (as Stupid answer fixer411 indicates). The Second Law of Thermodynamics then predicts that they will shift to the more disordered, and therefore, more probable solution state. Like everything, of course, there are exceptions to this rule. For example, sodium chloride solubility is fairly independent of temperature and cerium salts actually show a reduction in solubility with increasing temperature.
See Why_does_more_sugar_dissolve_in_hot_water_than_in_cold_water

Answer 4

In chemistry, when one substance is dissolved in another, the result is called a solution. The substance being dissolved is called the solute, and the substance it is dissolved into is called the solvent. If the solvent is water, the resulting solution is called an aqueous solution. Some solutes, like table salt (NaCl), ionize, or break up into charged particles called ions, when they go into an aqueous solution. This allows the solution to conduct electricity, which is why these substances are called electrolytes. Substances like sucrose, or table sugar (C-12 H-12 O-11), do not break up into ions and are called nonelectrolytes

Answer 5

because the particles in hot water melts the sugar so you really don't have to stir (unless there is a lot of sugar).

Answer 6

no actually it has more salt than sugar