Ch 11 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

Which substance would have the weakest intermolecular forces of attraction?

• CH₄

• NaCl

• H₂O

• MgF₂

Intermolecular forces for: CO₂

• Dispersion Force

• Dipole dipole

• Hydrogen bonding

How will the following molecule bond with itself?

• Dispersion
• Dipole
• Hydrogen bond

Which noble gas has the highest boiling point?

• Xe
• Kr
• Ar
• He

Which of the following has the highest boiling point?

• H₂
• NH₃
• N₂
• O₂

Liquids are described as having a 

• definite shape and indefinite volume
• indefinite shape and indefinite volume
• definite shape and definite volume
• indefinite shape and definite volume

When a liquid changes its phase and turns into a solid it is known as

• condensation.
• melting.
• vaporization.
• freezing or solidification.