Why is sugar water more buoyant than fresh water?

Answer 1

Since salt and sugar dissolve into the liquid buoyancy is not applicable. Salt and sugar are dissolved by water, which means that the mater interacts with salt and sugar at a molecular level. For example: salt breaks into sodium and chloride. Water, since it is polar, arranges itself around the atoms and keeps the sodium and chloride within solution. This occurs similarly with Sugar. A more useful characteristic for these compounds in water is solubility. Solubility of a substance describes how much of that substance can be put in the water without precipitation of the substance. Sugar is less soluble than salt, which means you can put less sugar in a solution of water before it precipitates out.

Answer 2

Water with any added solute (salt, sugar) is more dense (heavier) than fresh water.

A sugar-water solution is denser than plain water, i.e. it weighs more per volume. Any displacement by a floating object will displace its weight in the liquid. For denser liquids, this represents a smaller volume displaced, and the object will not sink as far into the liquid.

Answer 3

Basically, when sugar (or any other substance) dissolves in water, it increases the density of the water. Because the density is greater, the force of buoyancy is greater as well.

This occurs because when an object is put in water, the force of buoyancy is equal to the weight of the water that is displaced (Archimedes' Principle). More density means more weight, so even though the same amount of water is displaced, when there is a dissolved substance in the water, the weight of that displaced water is greater.

This creates a stronger force of buoyancy.

Answer 4

Sugar water is more buoyant than fresh water because the dissolved sugar molecules increase the density of the solution. The increased density creates more upward force, buoyancy, acting on an object placed in the sugar water. This makes objects in sugar water float more easily than in fresh water.

Answer 5

Because after adding sugar a solution is formed which is not pure water; and this solution has other properties.