Chemical Bonding review quiz

What are the formal charges on the atoms in this molecular ion?

• S = -1, C = 0, N = 0

• S = 0, C = 0, N = -1

• S = -1, C = +1, N = 0

• S = 0, C = +1, N = -1

What is the formula of copper (I) sulfide?

• CuS

• Cu2S

• CuSO3

• Cu2SO3

Which molecule can be represented by resonance structures?

• H₂S

• HNO₃

• H₂O₂

• HCIO

Which molecule is polar?

• BeH₂

• AlH₃

• PH₃

• SiH₄

Which structure of CF₂Cl₂ is shown with correct bond and molecular dipoles?

• A

• B

• C

• D

Alloying a metal with a metal of smaller atomic radius can disrupt the lattice and make it more difficult for atoms to slide over each other. Which property will increase as a result?

• Electrical conductivity

• Ductility

• Malleability

• Strength

Chlorofluorocarbons (CFCs) contain bonds of the following lengths: C—C = 1.54 x 10^-10 m, C—F = 1.38 x 10^-10 m, C—Cl = 1.77 x 10^-10 m. What is the order of increasing bond strength in the CFC molecule?

• A. C—C < C—F < C—Cl

• B. C—C < C—Cl < C—F

• C. C—Cl < C—C < C—F

• D. C—F < C—C < C—Cl

A compound consists of the ions Ca^2+ and PO_4^3-. What are the name and formula of the compound?

• calcium phosphorus oxide CaPO_4

• calcium phosphorus oxide Ca_3(PO_4)_2

• calcium phosphate CaPO_4

• calcium phosphate Ca_3(PO_4)_2

What is the explanation for the high melting point of sodium chloride?

• The covalent bond between sodium and chlorine atoms is strong.

• Electrostatic attraction between sodium and chloride ions is strong.

• Intermolecular forces in sodium chloride are strong.

• Delocalized electrons cause strong bonding in sodium chloride.

Tags

NGSS.HS-PS1-3

Which molecule is most polar?

• CF4

• CCl4

• CHF3

• CClF3