Intermolecular forces

Front

What are intermolecular forces?

Back

Intermolecular forces are the forces of attraction or repulsion between neighboring particles (molecules, atoms, or ions). They are responsible for the physical properties of substances, such as boiling and melting points.

Front

What type of intermolecular force is present in CO2?

Back

London Dispersion Force.

Front

Rank the following intermolecular forces from strongest to weakest: covalent bond, London forces, hydrogen bond, dipole-dipole attraction.

Back

Covalent bond > Hydrogen bond > Dipole-dipole > London forces.

Front

What characterizes a polar covalent bond?

Back

Atoms unequally sharing electrons.

Front

Which substance has the weakest intermolecular forces if Substance C has a boiling point of 25 °C?

Back

Substance C has the weakest intermolecular forces.

Front

In a nonpolar covalent bond, how do electrons behave?

Back

Electrons gather around each atom equally.

Front

What is the strongest type of intermolecular force?

Back

Hydrogen bond.

Front

What is a dipole-dipole attraction?

Back

A dipole-dipole attraction is an intermolecular force that occurs between polar molecules, where the positive end of one molecule is attracted to the negative end of another.

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary dipoles in molecules, occurring in all molecules but are the only forces present in nonpolar molecules.

Front

How do intermolecular forces affect boiling points?

Back

Stronger intermolecular forces result in higher boiling points, as more energy is required to separate the molecules.