RESEARCH METHODOLOGY

Detailed explanation-1: -Because powdered sugar has a greater surface area than a sugar cube. When you dissolve sugar in water, you need to break the bonds between sugar molecules. The more surface area you have, the more sugar molecules are exposed to water molecules, and the faster the bonds can be broken.

Detailed explanation-2: -Powdered sugar would react more rapidly because of the increased surface area. Zinc in HCl at 35°C would react more rapidly because you have increased the temperature. Increased temperature means increased kinetic energy (the molecules are moving faster) which allows for more collisions to occur.

Detailed explanation-3: -The sugar crystals would react faster than sugar cubes because sugar crystals occupy a wider surface area, which means that more particles of sugar are exposed to the chemical reaction.

Detailed explanation-4: -If the phase of matter (solid, liquid, or gas) of the reactants results in more collisions, the reaction will be faster. Gas molecules move fast, so gases usually react faster than liquids. Liquids move faster than solids, so liquids react faster than solids.