AP Chem Intermolecular Forces

Hydrocarbons will have which type of intermolecular forces?

• Dispersion
• dipole
• hydrogen bonds

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.HS-PS3-4

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

• CBr₄
• NO₂
• H₂S
• NH₃

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

• dipole-dipole attraction
• London forces

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

Which is the strongest intermolecular force below"

• Ionic
• Dispersion
• Hydrogen
• Metallic

Which element is expected to demonstrate the strongest dispersion forces and have the highest boiling point?

• Ne

• Kr

• Xe

• Rn

A compound has the molecular formula C₃₀H₆₂. The compound is known to have nonpolar molecules and exists as a solid at room temperature. Which is the biggest factor responsible for the properties of this compound?

• ion-molecule attractions

• London dispersion forces

• dipole-dipole attractions

• hydrogen bonding

Which statement explains why Br₂ is a liquid at STP and I₂ is a solid at STP?

• Molecules of Br₂ are polar, and molecules of I₂ are nonpolar

• Molecules of Br₂ are nonpolar, and molecules of I₂ are polar

• Molecules of Br₂ have stronger intermolecular forces than molecules of I₂.

• Molecules of I₂ have stronger intermolecular forces than molecules of Br₂.

Tags

NGSS.HS-PS1-3