UNIT 7 – NOMENCLATURE & CHEMICAL FORMULAS

I. Nomenclature

A. Writing formulas

B. Naming compounds

II. Chemical Formulas

A. Oxidation Numbers

B. Percent Composition

C. Empirical Formulas

D. Molecular Formulas

E. Hydrates

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North Carolina Essential Standards and Clarifying Objectives:

Chm. 1.2 Understand the bonding that occurs in simple compounds in terms of bond type, strength, and properties.

1.2.4 Interpret the name and formula of compounds using IUPAC convention.

• Write binary compounds of two nonmetals: use Greek prefixes (di-, tri-, tetra-, ...)

• Write binary compounds of metal/nonmetal*

• Write ternary compounds (polyatomic ions)*

• Write, with charges, these polyatomic ions: nitrate, sulfate, carbonate, acetate, and ammonium.

• Know names and formulas for these common laboratory acids: HCl, HNO₃, H₂SO₄, HC₂H₃O₂ (CH₃COOH)

*The Stock system is the correct IUPAC convention for inorganic nomenclature.

Chm. 2.2 Analyze chemical reactions in terms of quantities, product formation, and energy.

2.2.5 Analyze quantitatively the composition of a substance.

• Calculate empirical formula from mass or percent using experimental data.

• Calculate molecular formula from empirical formula using molecular weight.

• Determine percentage composition by mass of a given compound.

• Perform calculations based on percent composition.

• Determine the composition of hydrates using experimental data.