Unit 05 Extra Credit (bonding)

Front

What are London Dispersion Forces (LDF)?

Back

London Dispersion Forces are weak intermolecular forces that arise from temporary dipoles in molecules. They are present in all molecules, but are the only type of intermolecular force in nonpolar molecules.

Front

Which molecule exhibits only London Dispersion Forces?

Back

CH₄ (methane) exhibits only London Dispersion Forces because it is a nonpolar molecule.

Front

What is hydrogen bonding?

Back

Hydrogen bonding is a strong type of dipole-dipole attraction that occurs when hydrogen is bonded to highly electronegative atoms like nitrogen, oxygen, or fluorine.

Front

Which molecule is capable of hydrogen bonding?

Back

HF (hydrofluoric acid) is capable of hydrogen bonding due to the presence of hydrogen bonded to fluorine.

Front

What is the molecular shape of CO₂?

Back

The molecular shape of CO₂ (carbon dioxide) is linear.

Front

What is the molecular shape of CH₄?

Back

The molecular shape of CH₄ (methane) is tetrahedral.

Front

What type of bond is formed between a metal and a nonmetal?

Back

An ionic bond is formed between a metal and a nonmetal.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons from one atom to another, while covalent bonds involve the sharing of electrons between atoms.

Front

What is a polar molecule?

Back

A polar molecule has a net dipole moment due to the presence of polar bonds, resulting in a molecule with a positive and a negative end.

Front

What is a nonpolar molecule?

Back

A nonpolar molecule has no net dipole moment, meaning the charge distribution is even, and it does not have distinct positive or negative ends.