Exploring Polyatomic Ions

What does the prefix 'poly' in polyatomic ions mean?

• None

• Few

• Single

• Many

Which of the following is a polyatomic ion with a 1+ charge?

• Ammonium

• Carbonate

• Nitrate

• Acetate

What is the charge of the sulfate ion (SO4)?

• 1-

• 2-

• 1+

• 3-

When writing the chemical formula for potassium carbonate, what is the correct formula?

• K(CO3)2

• K2(CO3)2

• KCO3

• K2CO3

In the formula for magnesium sulfate, why is SO4 placed in parentheses?

• To indicate multiple ions

• To show it is a polyatomic ion

• To balance the charge

• To separate it from magnesium

What is the correct formula for aluminum hydroxide?

• AlOH3

• Al(OH)

• Al(OH)3

• Al3OH

Which polyatomic ion is the only one with a positive charge?

• Nitrate

• Hydroxide

• Ammonium

• Phosphate

How do you write the formula for ammonium nitride?

• (NH4)3N

• NH4N

• NH4N3

• NH4(3)N

What is the name of the compound with the formula Na2CO3?

• Sodium Nitrate

• Sodium Sulfate

• Sodium Phosphate

• Sodium Carbonate

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

• Change its ending

• Add a prefix

• Write it as is

• Omit it