Do Now1. Label the element square.

2. What is an oxidation number?

3. How do you think we can use these numbers to predict the type of bond formed? (ionic, covalent)

10Ne

Neon20.180

Atomic #

Chemical Symbol

Element Name

Avg. Atomic mass #

The charge of an atom when it gains, loses, or shares an e- in a chemical bond.

Elements close to noble gasses tend to give or take e- and form ionic bonds.

Homework Achieve 3000 – A New House on the Block (4-15)

AnnouncementsFriday – Take your child to work dayMonday – FSA/FCAT Testing

Testing WeekPackets and labs – make up work

L.O. SWBAT use the periodic table to predict compound names.

Glue in Oxidation Number Worksheet

On the periodic table, strong electron donors are on the left side (alkali metals).

Strong electron acceptors are on the right side (halogens).

The further apart two elements are on the periodic table, the more likely they are to form an ionic compound.

Form when electrons have equal tendency to accept e-.

Elements are both nonmetals and tend to be close together on the periodic table.

Oxidation numbers for all the atoms in a compound must add up to zero.

Khan Academy Video

Oxidation # of Common polyatomic ions

Page 366

OxidationNumber

Name of Ion Formula

1+ammoniu

mNH4

+

2- carbonate CO32-

1- hydroxide OH-

3-phosphat

ePO4

3-

2- sulfate SO42-

1. Mono2. Di3. Tri4. Tetra5. Penta6. Hexa7. Hepta8. Octa9. Nona10. Deca

Naming Compound Rules Page 367-368

Binary Compounds

MgBr2

1. Write the name of the 1st element• Mg = Magnesium

2. Write the root name of the 2nd element• Br = Bromine = brom-

3. Add the suffix –ide to the root name• brom + ide = bromide

4. Write the name

Magnesium bromide

lower case

Naming Compound Rules Page 367-368

prefixes

N2O4

1. Write the name of the 1st element Prefix: Specify the #• N2 = di + nitrogen

2. Write the root name of the 2nd element Prefix: Specify the # Suffix: - ide• O4 = tetra + ox + ide

3. Write the name

Dinitrogen tetraoxide

Naming Compound Rules Page 367-368

Compounds with Polyatomic ions

NH4Cl

1. Write the name of the 1st element• NH4 = ammonium

2. Write the root name of the 2nd element• Cl = Chlorine = chlor-

3. Add the suffix –ide to the root name• chlor + ide = chloride

4. Write the name

Ammonium chloride

Work on Packet 1 – Pre assessment and reading guide for chapter 16 section 1Finished? Turn it in