Ionic Bonds

Ionic Bonds

Gain or Lose Valence Electrons

Octet Rule

Ions

Cation and Anion

A review of a MOLECULE

Molecule: when 2 or more ATOMS bond together

H₂ O₂ H₂O CO NaCl

These are all chemical FORMULAS that represent molecules

Multiple Choice

Two or more atoms bonded together is a....

• element

• atom

• molecule

• bond

Chemical Bonds

Bonding is how ATOMS join together to create everything around us.

Almost everything around us is a molecule.

3 types of Bonds: Ionic, Covalent, Metallic

We are going to start by focusing on Ionic Bonds ONLY

Ionic Bonds = Atoms GAIN or LOSE electrons

Ionic Bonding happens when an atom GIVES 1 or more Valence Electrons away to another atom who then GAINS 1 or more Valence Electrons

Multiple Choice

In an Ionic Bond Valence Electrons are what?

• created

• destroyed

• gained or lost

• shared

Why do Atoms gain or lose electrons?

OCTET Rule: Every atom is unstable.

For an atom to become stable they need 8 Valence Electrons.

They complete this task by giving away or receiving electrons.

Multiple Choice

How many valence electrons does an atom need to become stable?

• 2

• 4

• 6

• 8

Ionic Bonds happen between a Metal and a Nonmetal

The METAL atom gives away electrons

The NONMETAL atom receives the electrons

Multiple Choice

Is Sodium Na the Metal or the Nonmetal in the Ionic Bond? How do you know

• Metal

• Nonmetal

Charged ATOMS are called IONS

When an ATOM gains an ELECTRON it becomes NEGATIVELY CHARGED

When an ATOM loses an ELECTRON it becomes POSITIVELY CHARGED

Cation

Atoms that lose electrons become Positively Charged and are called CATIONS

Anion

Atoms that GAIN electrons become NEGATIVELY Charged and called Anions

Multiple Choice

Ionic Bonds occur between what two types of atoms?

• metals and metals

• Non metals and Non metals

• Metals and Non Metals

• unknown

Multiple Choice

Positively charged Atoms are called?

• cations

• anions

Multiple Choice

negatively charged atoms are called?

• cations

• anions

If an atom gives away 1 electron its charge becomes +1

If an atom gains 1 electron its charge becomes -1

If an atom gives away 2 electrons its charge becomes +2

If an atom gains 2 electrons its charge becomes -2

Multiple Choice

Is Fluorine F the cation or the anion in the Ionic Bond? how do you know?

• cation

• anion

Multiple Choice

At atom that GAINS 1 electron will have what charge?

• +1

• +2

• -1

• -2

Multiple Choice

At atom loses 2 electrons, its charge becomes what

• +1

• +2

• -1

• -2

Recap of all things IONIC BONDING

Metals give away electrons become cations

Non metals gain electrons become anions

When atoms lose or gain electrons they become charged and turn into IONS

Opposite charges attract one another and is what BONDS atoms together to form molecules

Every ATOM is trying to fill their OCTET (8 valence electrons)