Intermolecular Forces Practice

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They play a crucial role in determining the physical properties of substances.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary dipoles in molecules due to the movement of electrons. They increase with the size of the electron cloud.

Front

What is dipole-dipole interaction?

Back

Dipole-dipole interactions are attractive forces between the positive end of one polar molecule and the negative end of another polar molecule.

Front

What is hydrogen bonding?

Back

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

Front

How do intermolecular forces affect boiling points?

Back

Substances with stronger intermolecular forces generally have higher boiling points because more energy is required to overcome these forces.

Front

Which type of intermolecular force is the strongest?

Back

Hydrogen bonding is generally considered the strongest type of intermolecular force.

Front

What is the relationship between molecular size and London dispersion forces?

Back

London dispersion forces increase with the size of the electron cloud; larger molecules with more electrons have stronger London forces.

Front

How do polar and nonpolar molecules interact?

Back

Polar molecules can interact with each other through dipole-dipole interactions, while nonpolar molecules interact primarily through London dispersion forces.

Front

What is the significance of molecular polarity in intermolecular forces?

Back

Molecular polarity determines the type and strength of intermolecular forces; polar molecules have stronger interactions than nonpolar molecules.

Front

What is the difference between dipole-dipole forces and London dispersion forces?

Back

Dipole-dipole forces occur between polar molecules due to their permanent dipoles, while London dispersion forces are temporary and occur in all molecules, regardless of polarity.