To separate sugar from its mixture with sand, a proportionally large amount of water is added to the mixture and shaken vigorously to allow the sugar to dissolve. The solid-liquid mixture is filtered using a porous material to retain the sand on the filter and to allow the liquid portion to pass through. The liquid contains the sugar originally present in the solid mixture.
In a laboratory setting, prepare a mixture of known amounts of sand and sugar in a test tube or flask. Add water to the mixture's container, then shake the container to allow the sugar to dissolve properly in the water. Meanwhile, set up a filtration system consisting of a funnel, a fan-folded filter paper and a filtrate flask. Dispense the solid-liquid mixture from the container to the filtration setup. Through this process, sand is retained on the filter paper, while the sugar solution passes through the paper as the filtrate. If both materials need to be recovered in pure form, the sand and the sugar solution may be dried up by evaporating the water.
The physical separation of sand and sugar is made possible by their differences in solubility. Sand is insoluble in water, while sugar is readily dissolved as soon as it comes in contact with water.Learn More
To separate sand and salt, dissolve the salt in water, decant the liquid and evaporate the water to leave salt crystals. Salt and sand is a heterogeneous mixture that can be separated by physical means.Full Answer >
According to the Purdue University College of Science, sugar dissolves easily in water due to the fact that sucrose molecules are held together with weak intermolecular forces. The energy produced when these molecules bond with water is more than enough to offset the energy needed to break those bonds in the first place.Full Answer >
The Department of Physics at the University of Illinois states that sugar dissolves faster in hot water than in cold water because hot water gives sugar crystals energy. The hotter the water, the higher the energy, and the faster sugar crystals dissolve.Full Answer >
To separate alcohol from water, you must heat the solution, evaporate the ethanol into vapor, cool it down and condense it back into a liquid using a distillation apparatus. This process is called distillation, and it is used to separate a pure liquid from a liquid mixture. Distillation works for liquids that have different boiling points.Full Answer >