EVERYDAY SCIENCE

Detailed explanation-1: -The reason why sugar dissolves at a faster rate in hot water has to do with increased molecular motion. The added energy in the hot water causes water molecules to move faster and sucrose molecules to vibrate faster. This added movement tends to make the bonds between sucrose molecules easier to overcome.

Detailed explanation-2: -Sugar dissolves in cold water faster than in hot water.

Detailed explanation-3: -Energy from hot water molecules makes solids more soluble. In hot water, molecules are moving around more, so there are more collisions between the water molecules and a solid. A solvent is a substance that can dissolve other substances – water is a good solvent.

Detailed explanation-4: -Answer and Explanation: Sugar dissolves in water at 0 degrees Celsius. This is because sugar is soluble in liquid water at all temperatures at standard pressure.

Detailed explanation-5: -Sugar crystals do not dissolve easily in ice cold water, because the low temperature slows down the process of diffusion. The solvent has low kinetic energy and therefore cannot move faster to surround the sugar crystals.