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.

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F.  Which of the following has hydrogen bonding?

• CBr₄
• NO₂
• H₂S
• NH₃

Does CH₄ have hydrogen bonding?

• yes
• no

Intermolecular forces for: NH₃

• London Dispersion Force

• Dipole dipole

• Hydrogen bonding

Intermolecular forces for: CO₂

• London Dispersion Force

• Dipole dipole

• Hydrogen bonding

Determine the type of intermolecular force present in SiO₂.

• dipole dipole

• ion-ion

• ionic

• London Dispersion Force

H₂S has what kind of intermolecular force?

• dipole dipole

• London Dispersion Force

• H-bond

• ionic

Intermolecular forces are the forces

• within molecules
• between molecules

Which of the following has the highest boiling point?

• H₂
• NH₃
• N₂
• O₂

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂