1. © Oxford University Press 2011 IC1.3.2 Images Images

2. © Oxford University Press 2011 IC1.3.2 Images If you eat too much salt you are more likely to get heart disease

3. © Oxford University Press 2011 IC1.3.2 Images Sodium

4. © Oxford University Press 2011 IC1.3.2 Images Chlorine

5. © Oxford University Press 2011 IC1.3.2 Images Sodium chloride

6. © Oxford University Press 2011 IC1.3.2 Images When sodium chloride forms from its elements, each sodium atom transfers one of its electrons to a chlorine atom.

7. © Oxford University Press 2011 IC1.3.2 Images When sodium chloride forms from its elements, each sodium atom transfers one of its electrons to a chlorine atom.

8. © Oxford University Press 2011 IC1.3.2 Images Each atom now has eight electrons in its highest energy level. These electron arrangements are very stable.

9. © Oxford University Press 2011 IC1.3.2 Images Each atom now has eight electrons in its highest energy level. These electron arrangements are very stable.

10. © Oxford University Press 2011 IC1.3.2 Images Sodium ions and chloride ions are arranged like this

11. © Oxford University Press 2011 IC1.3.2 Images Sodium ions and chloride ions are arranged like this