Ions

Introduction to Ions

Ms. Sylvia

Multiple Choice

What is an ion?

• Charged atom

• Cation

• Anion

• Neutral Atom

Ion

• Charged atom that has lost or gained an electron

• There are two different types of ions

Multiple Select

What are the two types of ions?

• Cations

• Atoms

• Protons

• Anions

• Electrons

Cations

• These are atoms that give up electrons

• The elements that give up electrons are METALS

• When a metal gives up an electron, it becomes positive

Anions

• These are atoms that take in electrons

• The elements that take in electrons are NONMETALS

• When a nonmetal takes in an electron, it becomes negative

Open Ended

Why do you think atoms lose or gain electrons?

Why Atoms Lose or Gain Electrons

• To have a noble gas electron configuration

• For example, when lithium loses an electron, it will have the same number of electrons as helium.

• For example, when fluorine gains an electron, it will have the same number of electrons as neon.

Main Points

• Ions = charged atoms that lost or gained an electron

• Cations are atoms that lost an electron

• Cations can only be metals

• Anions are atoms that gained an electron

• Anions can only be nonmetals