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 play a crucial role in determining the physical properties of substances.

Front

What is hydrogen bonding?

Back

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

Front

Does HF have hydrogen bonding?

Back

Yes, HF (hydrogen fluoride) exhibits hydrogen bonding due to the presence of hydrogen bonded to fluorine.

Front

How many shared (bonded) pairs of electrons are in O2?

Back

O2 has 2 pairs of shared (bonded) electrons.

Front

What is a polar molecule?

Back

A polar molecule is a molecule that has a net dipole moment due to the presence of polar bonds, resulting in a partial positive charge on one end and a partial negative charge on the other.

Front

What is a nonpolar molecule?

Back

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

Front

Which substance has the weakest intermolecular forces?

Back

The substance with the lowest boiling point typically has the weakest intermolecular forces.

Front

What explains the very high melting and boiling point of water?

Back

The very high melting and boiling point of water is explained by the strong hydrogen bonds between water molecules.

Front

What are dispersion forces?

Back

Dispersion forces, also known as London dispersion forces, are weak intermolecular forces that arise from temporary shifts in electron density in atoms or molecules.

Front

How do intermolecular forces affect boiling points?

Back

Stronger intermolecular forces result in higher boiling points, as more energy is required to overcome these forces.