Intermolecular Forces Practice

Front

What is the London dispersion force?

Back

A type of intermolecular force that arises from temporary dipoles in molecules, present in all molecules, especially nonpolar ones.

Front

What type of intermolecular force is present in hydrogen fluoride (HF)?

Back

Hydrogen bonding, which is a strong type of dipole-dipole interaction.

Front

Which is stronger: hydrogen bonding or dipole-dipole interactions?

Back

Hydrogen bonding is stronger than dipole-dipole interactions.

Front

What is the main intermolecular force in nonpolar molecules?

Back

London dispersion force.

Front

What is the main intermolecular force in polar molecules?

Back

Dipole-dipole interaction.

Front

Define hydrogen bonding.

Back

A strong intermolecular force that occurs between molecules when a hydrogen atom is bonded to a highly electronegative atom (like N, O, or F).

Front

What are dipole-dipole interactions?

Back

Intermolecular forces that occur between polar molecules due to the attraction between positive and negative ends.

Front

Explain the significance of intermolecular forces in determining boiling points.

Back

Stronger intermolecular forces result in higher boiling points due to the increased energy required to separate molecules.

Front

What is the relationship between molecular polarity and intermolecular forces?

Back

Polar molecules exhibit stronger intermolecular forces (like dipole-dipole and hydrogen bonding) compared to nonpolar molecules, which primarily exhibit London dispersion forces.

Front

How do London dispersion forces vary with molecular size?

Back

London dispersion forces increase with molecular size and surface area, leading to stronger attractions in larger molecules.