Ionic Compound Practice Test

Oxidation Numbers and the Periodic Table

• Elements in the same group (column) have the same oxidation number.

Oxidation number

• Oxidation number: a positive or negative number that indicates how many electrons have been lost, gained, or shared to become stable.

• For ionic compounds, the oxidation number is the same as the charge on the ion.

• Example: A sodium ion has a charge of +1 and an oxidation number of +1

Multiple Choice

If I gain electrons I become

• Positive because I've added to my atom

• negative because I've added electrons

• same because i'm balanced

• equal because now I have electrons

Multiple Choice

True are False: Ions are formed because atoms want to obtain the stable arrangement of a noble gas.

• True

• False

Multiple Choice

Metals tend to __________.

• gain electrons

• lose electrons

Multiple Choice

Nonmetals tend to ______.

• gain electrons

• lose electrons

Multiple Choice

When naming an ionic compound, which name stays exactly as it is?

• The cation

• The anion

Multiple Select

Which neutral atom would form a cation?

Choose all that apply.

• Potassium (K)

• Oxygen (O)

• Neon (Ne)

• Barium (Ba)

Multiple Select

Which neutral atom would form an anion?

Choose all that apply.

• Helium (He)

• Magnesium (Mg)

• Oxygen (O)

• Fluorine (F)

Multiple Choice

Which of these combinations is an ionic compound made of?

• Metal and Metal

• Nonmetal and Nonmetal

• Metal and Nonmetal

• Cation and Cation

Multiple Choice

Which is most likely to form a negative ion?

• an element from group 17

• a metal

• an element from group 1

• an element with atoms that have eight valence electrons

Multiple Choice

When naming a compound, which of these is written first?

• Metal

• Nonmetal

• Anion

• Cation

Binary Compounds

• Binary compounds: compounds composed of two elements

• Example: LiF (lithium fluoride)

Multiple Choice

The chemical formula for an ionic compound of potassium and oxygen is

• KO.

• K₂O.

• K₂O₂.

• KO₂.

Multiple Choice

What is the formula for magnesium phosphide?

• Mg₃P₂

• Mg₂P₃

• Mg₂PO₃

• Mg₃(PO₃)₂

Multiple Choice

Name this compound: 
NaBr

• Bromide sodide

• Sodium bromide

• Sodium bromate

• Sodium bromite

Multiple Choice

Name the following ionic compound: Cs₂S

• cesium sulfide

• cesium sulfate

• cesium(II) sulfate

• cesium(II) sulfide

Multiple Choice

The proper formula for magnesium hydroxide:

• MgOH

• Mg₂OH

• Mg(OH)₂

• Mg₂OH₂

Polyatomic Ionic Compounds

• Polyatomic Ionic Compounds: are compounds composed of more than two elements

• Example: Li₂SO₃ (lithium fluoride)

Multiple Choice

What is the charge on the hydroxide ion?

• 0

• -1

• -2

• -3

Multiple Choice

The sulfate ion is written as

• SO^-2

• SO₄^-2

• SO₃^-2

• SO₄⁺²

Multiple Choice

What is the correct formula for the polyatomic ion called ammonium?

• NH₃⁺

• NH₃

• CN⁺

• NH₄⁺

Multiple Choice

Which of the following is dichromate?

• Cr₂O₇^2-

• CrO₃^2-

• CrO₂^2-

• CrO₄^2-

Multiple Choice

The phosphate ion is written as

• PO^-3

• PO₃^-4

• PO₄^-3

• PO₄⁺³

Multiple Choice

What is the formula for calcium carbonate?

• CaCO

• CaCO₂

• CaCO3

• Ca3CO3

Multiple Choice

Name the following ionic compound: LiNO₃

• lithium nitrate

• lithium III nitrate

• lithium nitride

• lithium oxide

Multiple Choice

What is the name of K₃PO₄?

• Tripotassium Phosphate

• Tripotassium Phosphite

• Potassium phosphide

• Potassium phosphate

Multiple Choice

Name the following ionic compound: MgSO₄

• magnesium sulfoxide

• magnesium sulfide

• magnesium sulfate

• magnesium oxide

Multiple Choice

What is the formula for sodium nitrate?

• Na₃NO

• NaNO

• Na₃NO₃

• NaNO₃

Multiple Choice

What is the formula for calcium carbonate?

• CaCO

• CaCO₂

• CaCO3

• Ca3CO3

Transition Ionic Compounds

• When naming ionic compounds with transition metals you need to include roman numerals to show the charge of the metal.

• Example: Cu₂SO₃ (Copper (I) Sulfite

Multiple Choice

What is the what charge of lead in the compound: lead (IV) iodide

• +1

• +4

• +6

• -1

Multiple Choice

What is the charge of copper in the compound: CuBr₂

• +1

• +2

• -1

• -2

Multiple Choice

Which is the correct formula for the compound: lead (II) fluoride

• Pb₂F

• PbF₂

• PbF

• PbF₇

Multiple Choice

The name of FeCl₂ is

• iron chloride

• iron (II) chloride

• iron (I) chloride

• iron dichloride

Multiple Choice

Name the ionic compound SnSe₂

• Tin diselenide

• Tin(IV) Selenide

• Tin selenide

• Tin(II) triselenide

Multiple Choice

What is the name of the following compound: Mn₂O₃

• manganese oxide

• manganese (II) oxide

• manganese (III) oxide

• magnesium oxide

Multiple Choice

What is the formula for iron (II) carbonate?

• Fe₂CO₃

• FeCO₃

• Fe₂CO2

• FeCO4

Multiple Choice

What is the formula for copper (I) sulfate?

• CuSO₃

• CuSO₄

• Cu₂SO₃

• Cu₂SO₄

Multiple Choice

Find the formula zinc (II) sulfate

• ZnSO₃

• ZnSO₄

• ZnS

• Zn(SO₄)₂

• Zn₂S

Multiple Select

What is the name of Al(NO₃)₃?

• Aluminum trinitrate

• Monoaluminum nitrate

• Aluminum (III) nitrate

• Aluminum Nitrate

Multiple Choice

Name the following ionic compound: Cr(NO₂)₃

• chromium nitrite

• chromium nitride

• chromium (III) nitride

• chromium (III) nitrite

Multiple Choice

If copper (II) and phosphate bond together, the resulting chemical formula would be:

• Cu₂(PO₄)₃

• CuPO₄

• Cu₃(PO₄)₂

• Cu₃PO₄

Multiple Choice

What is the name of the compound Sc(OH)₃?

• Scandium (III) hydroxide

• Scandium (I) hydroxide

• Scandium (II) hydroxide

• Scandium hydroxide