Chapter 9 Chemical Names and Formulas. Do Now Objective Homework.

Chapter 9

Chemical Names and Formulas

• Do Now

• Objective

• Homework

9.1 Monatomic Ions

• Cations

• Anions

• Ions of Transition Metals

9.1 Polyatomic Ions

The names of most common polyatomic anions end in -ite or -ate

-ite -ate SO3

2- sulfite SO42- sulfate

NO2- nitrite NO3

- nitrate ClO2

- _________ _______ _________

9.2 Naming and Writing Formulas for Ionic Compounds

Binary Ionic Compounds

Cation name followed by anion name

9.2 Naming and Writing Formulas for Ionic Compounds

Binary Ionic Compounds

Cation name followed by anion name

Remember – not all ions

are monatomic

Practice Naming What do you call something made of a combination of …. What is the formula? Show charges if it helps

Cesium and Oxygen

Calcium and Iodine

Iron and Nitrogen

Sulfur and Potassium

Lithium , Oxygen and Sulfur

Practice Naming

What do you call something made of a combination of …. What is the formula?

Cesium and Oxygen Cesium Oxide Cs2O Calcium and Iodine Calcium Iodide Ca2+I2

-

Iron and Nitrogen

Sulfur and Potassium

Lithium , Oxygen and Sulfur

Practice Naming What do you call something made of a combination of …. What is the formula?

Cesium and Oxygen Cesium Oxide Cs2O Calcium and Iodine Calcium Iodide Ca2+I2

-

Iron and Nitrogen Iron (II) Nitride Fe32+N2

3-

Sulfur and Potassium Can’t for ionic compound – Both Non-Metals

Lithium , Oxygen and Sulfur Lithium Sulfite LiLithium Sulfate Li

• Do Now – Pop Quiz

• Objective – Naming and Writing Formulas for Molecular Compounds

• Homework – Pg. 270 # 22-25

Check your homework

Writing Formulas for Binary Ionic Compounds

Write the symbol for the cation and then the anion, then add subscripts to balance the charges.

What do you get when you make an ionic compound with nitrogen and calcium?

Writing Formulas for Binary Ionic Compounds

Write the symbol for the cation and then the anion, then add subscripts to balnce the charges.

Calcium NitrideCa2+ N3-

Writing Formulas for Binary Ionic Compounds

Write the symbol for the cation and then the anion, then add subscripts to balance the charges.

Calcium NitrideCa3

2+ N23-

Ca3 N2

+6 -6

Names and Formulas for Molecular Compounds (Covalent Bonding)

Formulas – recall how we have used the valence electron information to know how many of each element we need to satisfy the octet rule.

What do we call this?

What do we call this?

Dihydrogen Monoxide

Prefixes for Molecular Names

1 Mono- 2 Di-3 Tri-4 Tetra- 5 Penta- 6 Hexa- 7 Hepta- 8 Octa- 9 Nona- 10-Deca

Ionic Compounds- Precipitate Lab

• Combine 1 to 2 drops of each ionic compound to be reacted.

• Describe both the precipitate and the aqueous solution.

• Give the name and balanced formula for the precipitate.

• Clean up you materials and get your data signed.

• Do Now – Get out your Periodic Tables

• Objective – Add Naming Rules to Periodic TablesChapter 9 quiz

• HW – Read Chapter 10 (may take multiple nights) Bring calculator to every lesson or lab for Chapter 10

Ionic Compound Naming and Formula Rules Cation then Anion

Cation = name of element (Roman Numerals)

- ous - ic

Anion = Endings (look on tables)

- ide - ite - ate

Molecular Naming and Formula Rules

*List elements with prefixes*End in -ide

1 Mono- 2 Di-3 Tri-4 Tetra- 5 Penta- 6 Hexa- 7 Hepta- 8 Octa- 9 Nona- 10-DecaAll formulas must be balanced