Step 2- Bring the balloon close to your hair ... We call these charged atoms 'positive ions'. Negative charges usually move between the insulators when they are rubbed together.

Tell students that each salt crystal is made up of two different types of particles called sodium ions and chloride ions. Tell students that ions are atoms or molecules that have either a positive or ...

The positive areas of the water molecules surround the negative Chloride ions. The negative areas of the water molecules surround the positive sodium ions. As the attractions from the water molecules ...