Practice Naming and Writing Formulas

Front

What should you do when adding a subscript to a polyatomic ion?

Back

Put parentheses around the polyatomic ion before adding a subscript.

Front

What is the name of the compound FeCl₂?

Back

Iron (II) chloride.

Front

What is the chemical formula for sodium phosphate?

Back

Na₃PO₄.

Front

How do you name the ionic compound Cr(NO₂)₃?

Back

Chromium III nitrite.

Front

What is the correct name for Mg₃N₂?

Back

Magnesium nitride.

Front

What is a polyatomic ion?

Back

A charged ion composed of two or more atoms bonded together.

Front

How do you determine the charge of a transition metal in a compound?

Back

By using the charges of the other ions in the compound to balance the overall charge.

Front

What is the significance of parentheses in chemical formulas?

Back

Parentheses indicate that the enclosed polyatomic ion should be treated as a single unit, especially when adding subscripts.

Front

What is the formula for ammonium sulfate?

Back

(NH₄)₂SO₄.

Front

What is the name of the compound NaCl?

Back

Sodium chloride.