Dissolving salt in water is an example of a chemical change. The dissolution leads the salt to break into sodium and chlorine ions, so it alters its essential chemical properties. Even though boiling salt water ends up leaving behind a residue of salt, while the salt and water are together, the chemical processes change enough to be viewed as a chemical reaction.Know More
Salt is formed out of the ionically bonded elements of sodium and chlorine; the fact that water molecules are polar, with a slightly positive charge on one end and a slightly negative charge on the other means that water has the power to break some of these ionic bonds. The polarity in the salt molecules mirrors that of the water molecules, making it even easier for the water to break up the salt molecules, causing the salt to dissolve.
The process of breaking up the salt molecules involves the matching of opposite magnetic poles. The hydrogen end of the water molecule takes on a slightly positive charge, attracting the slightly negative chloride end of the salt molecule. This attraction also takes place between the slightly positive sodium end of the salt molecule and the slightly negative oxygen end of the water molecule.Learn more about Chemistry
Silicon dioxide, the primary component in sand, forms in large crystalline structures, which are held together by covalent bonds. These bonds require more energy to break than the polarity of water is able to supply. While water is able to dissolve a minute amount of silicon dioxide, natural water supplies are at the saturation point and unable to dissolve any more sand.Full Answer >
Water molecules break bonds and insert themselves between sugar molecules, causing sugar cubes to dissolve in water. The positively charged oxygen ions in water combine with the negatively charged hydroxyl groups in sugar, forming a hydration shell around the sugar molecule.Full Answer >
Sugar dissolves more quickly in hot water because the water molecules are moving at a higher rate of speed and break down the sugar more quickly. The hot water contains more kinetic energy, and the more mobile water makes the sucrose molecules in the sugar move faster as well.Full Answer >
Glucose dissolves in water because the strong magnetic charge of water is able to break the molecular bonds that connect the sugar molecules. Crystalline sugar consists of a matrix of molecules held together by relatively weak bonds, and when submerged in water, the stronger charge of the water molecules pulls the sugar apart.Full Answer >