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.
Explain how sodium chloride dissolves in water. it dissociates in water as the positive poles of the water molecules are attracted to the negatively charged chloride ions, and the negative poles of the water molecules are attracted to the positively charged sodium ions.