Objectives Today I will be able to:▪ Determine the oxidation number of an element in a compound▪ Apply rules to naming organic compounds

Informal assessment – monitoring student interactions as they complete the practice problems

Formal assessment – analyzing student responses to the practice problems and exit ticket

Common Core Connection Build strong content knowledge Make sense of problems and persevere in solving

them Reason abstractly and quantitatively

Evaluate: Warm UpExplain: Oxidation Number NotesElaborate: Oxidation Number

PracticeElaborate/ Evaluate: Organic

Nomenclature ReviewEvaluate: Exit Ticket

Write the formula for the gas laws below Boyle’s Law Ideal Gas Law

Name the acids listed then identify the acid as a strong or weak acid HBr HC2H3O2 H2SO4 HClO3 HClO2

Today I will be able to: Determine the oxidation number of an

element in a compound Apply rules to naming organic

compounds

Signed Syllabus and Safety Contract due Friday, August 29

Cation/Anion Quiz sometime the week of September 2-5

Solubility Rule Quiz sometime the week of September 8-11

Summer Assignment due September 2 Summer Assignment Exam September

2

Warm UpOxidation Number NotesOxidation Number PracticeOrganic Nomenclature ReviewExit Ticket

Are used to keep track of electrons being gained and lost

Monatomic ions oxidation number is the same as its

charge Examples: What are the oxidation

numbers when the elements below form ions?▪ Li▪ Mg▪ Al▪ O

Neutral molecules and polyatomic ions Each atom is assigned a hypothetical

charge Charge is assigned by dividing up the

electrons and through a specific set of rules

1. For an atom in its elemental form, the oxidation number is always zero

2. For any monatomic ion the oxidation number equals the ionic charge3. Nonmetals usually have negative oxidation numbers, although

sometimes they can be positive The oxidation number of oxygen is usually -2 in both ionic or

molecular compounds. Exception: Peroxides with the O22- ion giving

oxygen an oxidation number of -1. Oxidation number of hydrogen is usually +1 when bonded to

nonmetals and -1 when bonded to metals (example: NaH) Oxidation number of fluorine is -1 in all compounds. Other

halogens have an oxidation number of -1 in most binary compounds. However, when combined with oxygen in oxyanions, they have positive oxidation states

The sum of the oxidation numbers in all atoms of a neutral compound is zero. The sum of the oxidation number in a polyatomic ion equals the charge of the ion

What are the oxidation numbers for sulfur in the following compounds. H2S S8 SCl2 Na2SO3 SO42-