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

• London dispersion forces which are present in all molecules

• Asymmetrical shape of the polar bonds.

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

• CBr₄

• NO₂

• H₂S

• NH₃

Tags

NGSS.HS-PS1-1

Does H₂O have hydrogen bonding?

• yes
• no

Tags

NGSS.HS-PS1-3

Does HF have hydrogen bonding?

• yes
• no

Does HCl have hydrogen bonding?

• yes
• no

Does CH₄ have hydrogen bonding?

• yes
• no

Does NH₃ have hydrogen bonding?

• yes
• no

Tags

NGSS.HS-PS2-6

Which is the second strongest intermolecular force, after hydrogen bonding?

• dipole-dipole attraction
• London forces

Tags

NGSS.HS-PS1-3

All molecules have London forces between them, but dipole-dipole and hydrogen bonding are so much stronger that when they are present. Which of these has ONLY London forces?

• I₂

• NH₃

• OCl₂

• SH₂

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Tags

NGSS.HS-PS1-3