Water is a versatile solvent because it dissolves more substances than any other liquid. As a polar molecule, with the oxygen side having a negative charge and the hydrogen side having a positive charge, water can bind to ions and other polar molecules, dissolving them.Know More
The majority of polar substances placed in water are dissolved. For example, water and sodium chloride, or table salt, interact so strongly that water breaks apart the ionic forces that keep the sodium and chlorine together. Each atom of chlorine is attracted to hydrogen, and each atom of sodium is attracted to oxygen.
Although water is often referred to as the "universal solvent," there are many substances that water cannot dissolve. Non-polar liquids, such as oils, cannot be dissolved in water, as water molecules are attracted to other water molecules more strongly than to oil. This results in a clearly defined separation between still water and oil molecules, where the less dense oil sits on top of the more dense water. Non-polar plastics do not dissolve in water for the same reason, which has resulted in large concentrations of plastic materials like shopping bags, cups, gasoline cans and bottles in the world's oceans and waterways.Learn more about Solutions & Mixtures
Oil and water don't mix because of a difference between the molecular structure of both substances which causes like molecules to bind tightly to other like molecules, leading to a quick separation between oil and water when the two are mixed. Oil floats above water because it is less dense. These two factors combine to make the two substances separate easily and behave in a predictable manner.Full Answer >
Water is not a mixture. Water is a pure substance, which is a compound with a constant composition and a fixed ratio of elements. Water is a constant composition of only water molecules with fixed ratios of the atoms of hydrogen and oxygen.Full Answer >
Water is an excellent solvent. It is known as the "universal solvent" because no other liquid is able to dissolve matter better. The chemical composition and molecular arrangement of water are responsible for this characteristic.Full Answer >
Water is a polar solvent, meaning it has partial opposite charges at each end of each molecule, and so ionic substances, in which each particle is charged, and other polar substances dissolve best in water. However, to dissolve a substance, the attraction of the solvent for particles of the solute must be greater than the forces holding the solute together, so many ionic substances are not soluble in water.Full Answer >