6.2 Work Naming Ionic Compounds With Polyatomic Ions

What is the charge of the sulfate ion?

• +2

• -1

• -2

• 0

What is the common name for KNO₃ when used in fertilizers?

• Potassium nitrate

• Sodium nitrate

• Calcium nitrate

• Ammonium nitrate

What is the charge of the nitrate ion?

• 0

• +1

• -1

• +2

What is the name of the compound with the formula Mg(OH)₂?

• Magnesium hydroxide

• Calcium hydroxide

• Sodium hydroxide

• Potassium hydroxide

What is the formula for potassium dichromate?

• KCrO₄

• K₂Cr₂O₇

• KCr₂O₇

• KCr₃O₈

What is the name of the compound NaNO₃?

• Sodium nitrate

• Potassium nitrate

• Calcium nitrate

• Ammonium nitrate

What is the significance of parentheses in chemical formulas?

• Parentheses indicate that the enclosed group of atoms is a polyatomic ion and the subscript outside applies to the entire group.

• Parentheses are used to separate different elements in a formula.

• Parentheses indicate the state of matter of the compound.

• Parentheses are used to denote the charge of an ion.

How would you represent three sulfate ions in chemical notation?

• (SO₄)₂

• (SO₄)₄

• (SO₄)₃

• (SO₄)₁

Tags

NGSS.MS-PS1-1

What is a polyatomic ion?

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

• An ion that contains only one atom.

• A neutral molecule with no charge.

• An ion that is formed by the loss of electrons from a single atom.

What is the formula for sodium sulfate?

• Na₂SO₄

• NaSO₄

• Na₂S

• Na₃SO₄

Tags

NGSS.MS-PS1-1