Molecular Forces

Molecules have weaker forces holding them together than ionic compounds.

• True

• False

Answer explanation

Molecules (such as water) generally have weaker intermolecular forces compared to the ionic bonds in compounds like salt.

Tags

NGSS.HS-PS1-3

Which of the following molecules contains only London dispersion forces?

• CF₄

• HCl

• H₂O

• MgO_(aq)

What explains the very high melting and boiling point of water

• Strong dipole-dipole bonds between water molecules

• Strong hydrogen bonds between water molecules

• Dispersion forces which are present in all molecules

• Asymmetrical shape of the polar bonds.

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Which of the following best describes a dipole-dipole interaction?

• A force between two nonpolar molecules

• A force between a polar molecule and a nonpolar molecule

• A force between two polar molecules

• A force between two ions

Which of the following best describes the role of intermolecular forces in determining the state of matter?

• They have no effect on the state of matter.

• Stronger intermolecular forces result in a gaseous state.

• Stronger intermolecular forces result in a solid state.

• Intermolecular forces only affect liquids.

Which of the following molecules would likely have the strongest London dispersion forces?

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

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Which of the following is NOT a type of intermolecular force?

• Dipole-dipole interaction

• London dispersion force

• Covalent bond

• Hydrogen bond

Which of the following is an example of a substance with strong dipole-dipole interactions?