Ions = Charged Particles
- Ions are formed when atoms gain or lose electrons.
- Positive ions (cations) are formed when a neutral atom loses electrons.
- Negative ions (anions) are formed when a neutral atom gains electrons.
- Metallic atoms tend to lose electrons to form positive ions (also known as cations).
- Nonmetallic atoms tend to gain electrons to form negative ions (a.k.a. anions).