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.
Uploaded on Sep 2, 2011. Water molecules pulling apart the ions (sodium and chloride) in a salt crystal, and then dissolving the salt. (Animation). http://nature.ca â Canadian Museum of Nature. 1  Education. 2  Standard YouTube License.