Do Now

•Draw a Lewis Structure for SrO

•Draw a Lewis Structure for CH2O

Aim

•How can compounds form both covalent and ionic bonds?

Introduction

•Draw a Lewis structure of NaCl, then check this molecule for proper octets.

•What would it look like if Na and H switched places between the two compounds?

Introduction•Pick the best spot to divide these salts into their similar components:

A)KCl B) GaH3 C) Al2O3

•Pick the best spot to divide this compound into its similar components:

New Idea: Polyatomic ions

Regents Review, Round 1

•Which compound contains only ionic bonds?1. HNO3

2. NH4Cl3. H2O4. Na2O

Regents Review, Round 2

•Which compound contains both ionic and covalent bonds?

1. HBr

2. CBr4

3. NaBr

4. NaOH

Regents Review, Round 3

•Which is the formula for sodium perchlorate?

1. NaClO

2. NaClO2

3. NaClO3

4. NaClO4

Regents Review, Round 4

•Which compound contains both ionic and covalent bonds?

1. Ammonia

2. Methane

3. Sodium nitrate

4. Potassium chloride

Regents Review, Round 5

•Which compound contains both ionic and covalent bonds?

1. CaCO3

2. PCl33. MgF2

4. CH2O