intermolecular forces

Which of the following factors plays an important role in the identification of specific intermolecular forces in a molecule?

• bond type
• density
• solubility
• molecular polarity

Which of the following molecules predominantly consists of dipole-dipole forces?

• HF
• Ne
• O₂
• ICl

Which of the following molecules would have the lowest boiling point?

• CH₄
• C₂H₆
• C₃H₈
• C₄H₁₀

Which of the following statements correctly compares the behavior of a mixture of ethanol and water at STP?

• Water will evaporate first, because it has weaker intermolecular forces
• Ethanol will evaporate first, because it has weaker intermolecular forces
• Ethanol and water will evaporate simultaneously
• The aqueous solution will evaporate partially at a temperature between the boiling points of water and of ethanol

What information do we look for on the periodic table if we  want to examine intermolecular forces?

• atomic mass
• atomic number
• electronegativity
• ionization 

What is vapor pressure

• the amount of energy required to evaporate

• the amount of energy required to boil

• the force per unit area exerted by the gaseous layer above a liquid

• the force per unit area exerted by a liquid on the gaseous layer above it

What explains the very high melting and boiling point of water?

• Dipole-dipole forces between water molecules
• Hydrogen bonds between water molecules
• London dispersion forces between water molecules
• Molecule-ion attractions between water molecules

In general, substances with stronger intermolecular forces have ________ boiling points than those with weaker forces

• Higher
• Lower
• The same

Which of the following molecules, based on the elements present, would be most polar?

• HF
• H₂
• HCl
• HBr

Intermolecular forces are the forces

• within molecules

• between molecules