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 is the relationship between intermolecular forces and boiling point?

Back

The weaker the intermolecular forces of a substance, the lower the boiling point.

Front

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

Back

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

Front

What type of intermolecular force is responsible for the high boiling point of water?

Back

Strong hydrogen bonds between water molecules.

Front

Which molecule is polar: H2, HCl, Cl2, or Br2?

Back

HCl is polar.

Front

Define hydrogen bonds.

Back

Hydrogen bonds are a type of strong dipole-dipole attraction that occurs between molecules when a hydrogen atom is bonded to a highly electronegative atom (like O, N, or F).

Front

What are London dispersion forces?

Back

London dispersion forces are weak intermolecular forces that arise from temporary shifts in electron density in atoms or molecules, leading to temporary dipoles.

Front

Explain dipole-dipole attractions.

Back

Dipole-dipole attractions occur between polar molecules, where the positive end of one molecule is attracted to the negative end of another.

Front

What is molecular polarity?

Back

Molecular polarity refers to the distribution of electrical charge over the atoms in a molecule, determining whether it has a positive or negative end.

Front

How do intermolecular forces affect the state of matter?

Back

Stronger intermolecular forces typically result in solids or liquids, while weaker forces lead to gases.