Alexa, the voice service that powers Echo, provides capabilities, or skills, that enable customers to interact with devices in a more intuitive way using voice. Examples of these skills include the ability to play music, answer general questions, set an alarm or timer and more.
1 Water can dissolve salt because the positive part of water molecules attracts the negative chloride ions and the negative part of water molecules attracts the positive sodium ions. 2  The amount of a substance that can dissolve in a liquid (at a particular temperature) is called the solubility of the substance.
Insoluble Salts. An insoluble salt is a salt that not dissolves in water at room temperature. Insoluble salts are prepared through the precipitation method using the double decomposition reaction. In precipitation method two aqueous and soluble solutions are mixed to form the precipitation of an insoluble salt.