Intermolecular Forces

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.

Does HCl have hydrogen bonding?

• yes
• no

Does CH₄ have hydrogen bonding?

• yes
• no

 Which of these has ONLY London forces?

• I₂ (nonpolar)

• NH₃ (polar)

• OCl₂ (polar)

• HCl (polar)

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Intermolecular forces for: NH₃

• dispersion forces only

• dispersion forces and hydrogen bonding

• dispersion forces, dipole-dipole forces, and hydrogen bonding

• hydrogen bonding only

Intermolecular force(s) present in HCl?

• dispersion forces and dipole-dipole forces

• dispersion forces only

• hydrogen bonding only

• dispersion forces, dipole-dipole forces, and hydrogen bonding

Which substance has the weakest intermolecular forces?

• Substance A, boiling point of 75 °C

• Substance B, boiling point of 105 °C

• Substance C, boiling point of 25 °C

• Substance d, boiling point of 45 °C

The weaker the intermolecular forces of a substance the _____________ the boiling point

• higher

• lower

Intermolecular forces for: CO₂

• Dispersion Force only

• dispersion forces and dipole-dipole forces

• dipole-dipole forces only

• dispersion forces, dipole-dipole forces and hydrogen bonding

Tags

NGSS.HS-PS1-3