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.

Tags

NGSS.MS-PS1-4

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

• CBr₄
• NO₂
• H₂S
• NH₃

Does HF have hydrogen bonding?

• yes
• no

Does HCl have hydrogen bonding?

• yes
• no

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 we can ignore London forces.  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

________________________ have the strongest intermolecular forces of attraction.

• Dipole- Dipole

• Dispersion

• Hydrogen Bonds

Tags

NGSS.HS-PS1-3

Intermolecular forces for: CO₂

• Dispersion Force

• Dipole dipole

• Hydrogen bonding

Tags

NGSS.HS-PS1-3

A Lewis structure for acetone is shown above. (There is a carbon atom at the center that isn't shown) What type of intermolecular forces will be present between the molecules of acetone in a pure sample of acetone? Select all that apply.

• ion-dipole attractions

• dipole-dipole attractions

• hydrogen bonding

• London dispersion forces

Tags

NGSS.HS-PS1-3