Understanding Intermolecular Forces

What type of intermolecular force is the strongest?

• Dipole-dipole interactions

• Hydrogen bonds

• Ion-ion interactions

• Van der Waals forces

Which interaction involves a formal charge interacting with a partial charge?

• Ion-dipole interactions

• Hydrogen bonds

• Ion-ion interactions

• Van der Waals forces

What causes water molecules to have a strong dipole-dipole interaction?

• Van der Waals forces

• Hydrogen bonds

• Nonpolar covalent bonds

• Ionic bonds

What kind of intermolecular force is involved between two polar molecules?

• Van der Waals forces

• Ion-ion interactions

• Ion-dipole interactions

• Dipole-dipole interactions

Which type of intermolecular force can any substance exhibit?

• Ion-ion interactions

• Dipole-dipole interactions

• Hydrogen bonds

• Van der Waals forces

What is required to change a substance from solid to gas?

• Reduction of intermolecular forces

• Decrease in temperature

• Increase in pressure

• Addition of heat energy

What determines if a molecule is overall polar or nonpolar?

• All of the above

• The electronegativity of elements

• The type of chemical bonds

• The molecular geometry

Which molecule is likely to have a dipole due to its molecular geometry?

• BF3

• NH3

• CS4

• CH4

Which factor does not affect the boiling point of a substance?

• Molecular weight

• Type of intermolecular forces

• Ambient pressure

• Color of the substance

During a chemistry lab, Maya is asked to identify which of the following molecules would exhibit dipole-dipole interactions. Which one should she choose?