Ionic Compounds and Polyatomic Ions Quiz

What is a characteristic of polyatomic ions that allows them to form ionic bonds?

• They are unstable.

• They have a charge.

• They are always single atoms.

• They are always neutral.

When naming a compound with a polyatomic ion, what should you do with the name of the polyatomic ion?

• Use the name as it is.

• Change the ending to -ide.

• Reverse the order of the name.

• Add a prefix to the name.

In the compound aluminum hydroxide, what is the role of hydroxide?

• It is a metal.

• It is the cation.

• It is the anion.

• It is a neutral molecule.

What is the correct name for the compound NH4O?

• Hydrogen oxide

• Nitrogen oxide

• Ammonium hydroxide

• Ammonium oxide

What is the charge of a potassium ion?

• 2-

• 1-

• 1+

• 2+

How do you balance the charges in potassium peroxide?

• Remove potassium ions.

• Remove oxygen atoms.

• Add more potassium ions.

• Add more oxygen atoms.

What is the chemical formula for potassium peroxide?

• K2O2

• K2O

• KO

• KO2

What is the charge of the dichromate ion in ammonium dichromate?

• 1-

• 2+

• 2-

• 1+

How many ammonium ions are needed to balance one dichromate ion?

• One

• Two

• Four

• Three

What is the correct way to write the chemical formula for ammonium dichromate?

• (NH4)2Cr2O7

• NH4Cr2O7

• NH4(Cr2O7)2

• N2H8Cr2O7