West Virginia Barber Written Practice Exam

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What is an atom or molecule with an electrical charge?

  1. Emulsion

  2. Ion

  3. Solution

  4. Suspension

The correct answer is: Emulsion

An atom or molecule with an electrical charge is known as an ion. In chemistry, ions are formed when atoms gain or lose electrons, resulting in a positive or negative charge. In this case, the correct answer is B. Emulsion, solution, and suspension are not atoms or molecules with an electrical charge. Emulsion is a mixture of two or more liquids that are normally immiscible; a solution is a homogenous mixture of one or more solutes dissolved in a solvent; and a suspension is a heterogeneous mixture in which particles settle out of a solvent over time.

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