Why do sugar crystal dissolve faster then sugar cubes?

Answer 1

A sugar cube would dissolve faster than a single sugar crystal of the same mass because it has a greater surface area (sugar cubes aren't solid; they're lots of little sugar crystals stuck together). The difference in speed between a sugar cube and normal (small) sugar crystals ought to be negligible with the crystals having perhaps a slight edge.

Answer 2

Sugar crystals have a larger surface area exposed to the solvent, allowing for quicker dissolution compared to sugar cubes, which have a smaller surface area. Additionally, sugar crystals are less compacted and can break apart more easily when in contact with a solvent, speeding up the dissolving process.

Answer 3

When combined with liquid, the separate grains of sugar have more surface area in contact with the liquid which allows them to dissolve more quickly. Sugar cubes have grains packed tightly together so that not all surfaces of all the grains are initially in full contact with the liquid. Until the cube loses its integrity from soaking and becoming wet and the grains begin to come apart from each other, they will not dissolve as quickly.

A:

Dissolving only takes place when the liquid can interact with the solid. A spoonful of sugar is loose, therefore more of the sugar touches the liquid. In a sugar cube most of the sugar is on the inside of the cube and cannot interact with the liquid until the outside dissolves.

Think of it like waiting in a checkout line at a store. If only one lane is open it will take longer than if lots of lanes are open, because you have to wait for the people in front of you to checkout. It is very much the same idea with dissolving.

Answer 4

THERE

Two things which affect the way sugar dissolves in water are:

Particle size.

Smaller particles will dissolve more quickly than larger particles as there is a greater surface area for the solvent (in this example, water) to react with. Think about a sugar cube. A large cube of sugar only has 6 large sides to react with the solvent, initially anyway.

Temperature.

Warm/hot water (e.g. in tea or coffee) will dissolve sugar better than cold water as the molecules in the water are more excited and have more energy.

HTH

Answer 5

Sugar granules are spread out, increasing surface area between the granules and the water. With sugar cubes, there is less surface area because the sugar is packed into a cube. One factor in rate of reaction is surface area: the larger the surface area, the faster the reaction.

Answer 6

It is all about surface area to volume ratio. Nuclear reactions occur in the nucleus. All other chemical reactions occur on surfaces. Sugar crystals have a much higher surface area than sugar cubes.

Answer 7

Sugarcubes dissolve fastest crushed and in hot water because more of the surface of the grains is touched, and the heated molecules are looser and move faster.

Answer 8

Solubility of sugar (sucrose C12H2O11) is much higher than that of salt (NaCL).

NaCl = 35.9g/100mL @ 25 deg C

Sucrose = 200g/100mL @ 25 deg C

Answer 9

A sugar cube is tightly compacted granulated sugar, meaning it has less surface area exposed to the solvent

Answer 10

It is not correct, it is inverse.