Nomenclature and Mixtures

Naming Compounds, Identifying Mixtures, Separation Techniques

Nomenclature• Naming Chemical Compounds– Three Types:

Nomenclature• Type A: Ionic

• Metals with known charge + Nonmetals

Nomenclature• Type B: Ionic

• Metals with UNKNOWN charge + Nonmetals

Nomenclature• Type C: COVALENT

• Nonmetal + Nonmetal

Let’s Practice, Shall We??

• Name the following using Type A rules:

• LiCl• MgI2

• Na2O

• Now go the other way:• Beryllium Nitride• Calcium Selenide• Hydrogen Chloride (a.k.a. hydrochloric acid)

Let’s Practice, Shall We??

• Name the following using Type B rules:

• Fe2O3

• FeO• CrCl2

• Now go the other way:• Manganese (I) Bromide• Nickel (II) Phosphide• Cobalt (III) Selenide

Let’s Practice, Shall We??

• Name the following using Type C rules:

• CO2

• CO• N2O3

• CCl4

• And, yes let’s go backwards one last time• Sulfur Dioxide• Trinitrogen Hexaoxide• Oxygen Dichloride

Nomenclature

• Practice:– Chromium (III) Chloride– Li2O– Rubidium Oxide– Dihydrogen Monoxide– Trinitrogen Hexaoxide– Iron (II) Fluoride

Polyatomics

• Sames rules apply– Just cancel out the charges

– These use Type A and B rules, NOT Type C

– NEVER USE A PREFIX WITH POLYATOMICS!!

– Try:• Iron (III) Hydroxide RbOH• Potassium Nitrate Li2SO4

• Hydrogen Sulfate HNO3

• Hydrogen Sulfide Na3PO4

Nomenclature,IN A NUTSHELL

• Type A: (works with polyatomics too)– Must know the charge– Cancel the charges out and name it– Add –ide to the end

• Type B: (works with polyatomics too)– MUST use a Roman Numeral (tells us the charge)– Then name just like “A”– NEVER, EVER, EVER!!!! USE A PREFIX!!! EVERRR!!

• Type C: (a polyatomic is metal so they CANNOT be used here two nonmetals only!!– MUST use a PREFIX, ONLY with two nonmetals!!