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 is a hydrogen bond?

Back

A hydrogen bond is a type of strong dipole-dipole attraction that occurs between a hydrogen atom bonded to a highly electronegative atom (like N, O, or F) and another electronegative atom.

Front

Can NH3 (ammonia) form hydrogen bonds?

Back

Yes, NH3 can form hydrogen bonds due to the presence of a hydrogen atom bonded to nitrogen, which is highly electronegative.

Front

Can H2O (water) form hydrogen bonds?

Back

Yes, H2O can form hydrogen bonds because it has hydrogen atoms bonded to oxygen, which is highly electronegative.

Front

Can H2S (hydrogen sulfide) form hydrogen bonds?

Back

No, H2S cannot form hydrogen bonds because sulfur is not electronegative enough to create a significant dipole.

Front

Rank the following in order of strength: intramolecular forces, London forces, hydrogen bond, dipole-dipole attraction.

Back

Intramolecular forces > hydrogen bond > dipole-dipole > London forces.

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.

Front

What is dipole-dipole attraction?

Back

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 factors affect the strength of intermolecular forces?

Back

Factors include molecular size, shape, polarity, and the presence of functional groups capable of hydrogen bonding.

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.