Chem M6 Test Review: Ionic Compounds and Metals

What is the formula of calcium phosphate, which is made up of the ions Ca²⁺ and (PO₄)^3-

• Ca₃(PO₄)₂

• Ca₆PO₄

• Ca₂(PO₄)₃

• Ca₃PO₄

Which is NOT true of the Sc³⁺ ion?

• it is a scandium ion with three positive charges

• it is formed by the loss of 4s and 3d electrons

• it is considered to be a different element than a neutral Sc atom

• it has the same electron configuration as Ar

Which of the following formulas is incorrect?

• aluminum phosphate: AlPO₄

• silver carbonate: AgCO₃

• magnesium hydroxide: Mg(OH)₂

• iron (II) sulfite: FeSO₃

In the ionic solid sodium chloride (NaCl), there is a _____ ratio of sodium ions to chlorine ions.

• one to one half

• one to two

• one to one

• two to one

How are ionic bonds formed?

• loss of electrons by atoms

• gain of electrons by atoms

• electrostatic forces between ions

• sharing electrons between atoms

How may ions are produced when one unit of sodium phosphate (Na₃PO₄) dissolves in water

• 7

• 2

• 4

• 3

Ionic crystals have high melting points and boiling points because _____.

• ionic bonds are relatively strong

• ionic solids are excellent conductors of electricity

• ionic liquids do not conduct electricity

• ionic bonds are relatively weak

Which of the following statements is true about the ammonium ion ( (NH₄¹⁺) and the phosphate ion (PO₄^3-)?

• ammonium is a monatomic cation and phosphate is a monatomic anion

• ammonium is a monatomic anion and phosphate is a monatomic cation

• ammonium is a polyatomic cation and phosphate is a polyatomic anion

• ammonium is a monatomic anion and phosphate is a monatomic cation

Ion X has a charge of 2+, and ion Y has a charge of 1-. What is the formula unit of the compound formed?

• X₂Y

• X₂Y₃

• XY

• XY₂

What is the proper name for the ionic compound Fe₂(SO₄)₃?

• iron sulfite

• iron (III) sulfite

• iron (III) sulfate

• iron (II) sulfate