Naming and Formulas of Ionic Compounds

Mr. Myers introduces ternary ionic compounds, explaining their composition and how to name them. He demonstrates naming and writing formulas for these compounds, using the crisscross method to balance charges. The video covers the use of parentheses in formulas and provides examples, including ammonium dichromate.

What is a key characteristic of ternary ionic compounds?

• They include a polyatomic ion.

• They contain only two elements.

• They are always neutral.

• They are composed of nonmetals only.

When naming a ternary ionic compound, what is the first step?

• Identify the polyatomic ion.

• Determine the charge of the compound.

• Name the first element or ion.

• Balance the chemical equation.

What is the name of the compound with the formula Na3P4?

• Sodium Phosphide

• Sodium Chlorate

• Sodium Phosphate

• Sodium Sulfate

Which polyatomic ion is present in the compound Al2O3?

• Chlorate

• Sulfite

• Sulfate

• Phosphate

What is the correct name for Zn3(ClO3)2?

• Zinc Phosphate

• Zinc Sulfate

• Zinc Chlorate

• Zinc Chloride

How do you determine the formula for potassium permanganate?

• By balancing charges using the crisscross method.

• By using only the charge of potassium.

• By adding subscripts to balance the equation.

• By ignoring the charge of permanganate.

What is the formula for barium nitrate?

• Ba(NO2)

• Ba(NO3)2

• Ba(NO2)2

• Ba(NO3)

Why are parentheses used in the formula for barium nitrate?

• To indicate a single polyatomic ion.

• To separate the polyatomic ion from its subscript.

• To show the charge of the compound.

• To balance the chemical equation.

What is the charge of ammonium in ammonium dichromate?

• -2

• -1

• +1

• +2

In the formula for ammonium dichromate, why is ammonium placed in parentheses?

• Because it is a single ion.

• To show it is a nonmetal.

• Because there are multiple ammonium ions.

• To indicate it is a metal.