Intermolecular Forces Chapter 11

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 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

What is the main type of intermolecular force in H2S?

Back

The main type of intermolecular force in H2S is dipole-dipole forces due to its polar nature.

Front

Which type of intermolecular force is the weakest?

Back

Dispersion forces (also known as London dispersion forces) are the weakest type of intermolecular force.

Front

What determines the strength of intermolecular forces?

Back

The strength of intermolecular forces is determined by factors such as polarity, molecular size, and the presence of hydrogen bonds.

Front

What is the boiling point of a substance influenced by?

Back

The boiling point of a substance is influenced by the strength of its intermolecular forces; stronger forces result in higher boiling points.

Front

What type of intermolecular force exists between nonpolar molecules?

Back

Nonpolar molecules experience dispersion forces as their primary type of intermolecular force.

Front

What is the significance of molecular geometry in determining polarity?

Back

Molecular geometry helps determine the distribution of charge within a molecule, which in turn affects its polarity and the type of intermolecular forces it can exhibit.

Front

What is the relationship between molecular weight and boiling point?

Back

Generally, as molecular weight increases, the boiling point also increases due to stronger dispersion forces.

Front

What is a dipole moment?

Back

A dipole moment is a measure of the separation of positive and negative charges in a molecule, indicating its polarity.