Quiz on Molecular and Ionic Compounds

What is the representative unit of a molecular compound?

• Atom

• Formula unit

• Molecule

• Ion

What type of bonding holds the atoms together in molecular compounds?

• Ionic

• Metallic

• Covalent

• Hydrogen

What type of element combination typically forms ionic compounds?

• Nonmetal + Nonmetal

• Metal + Metal

• Metal + Nonmetal

• Metalloid + Nonmetal

Sodium chloride (NaCl) is an example of a(n):

• Molecular compound

• Element

• Ionic compound

• Covalent network solid

Which of the following is most likely a molecular compound?

• NaBr

• CaCl₂

• CO₂

• MgO

Which property is most typical of ionic compounds?

• Low melting point

• Conductive in solid state

• Brittle with high melting point

• Volatile and soft

Which of the following best describes a formula unit?

• A neutral group of atoms

• The smallest unit of a molecular compound

• The lowest ratio of ions in an ionic compound

• A repeating group of molecules

What force holds ionic compounds together?

• Covalent bonds

• Intermolecular forces

• Dispersion forces

• Electrostatic attraction

Which type of compound has the lowest boiling point?

• Ionic compound

• Covalent network solid

• Molecular compound with dispersion forces

• Metal alloy

Which of the following is a covalent network solid?

• NaCl

• CO₂

• Diamond

• H₂O