AP Chem Unit 3

Which of the following probably has the highest solubility in hexane, C₆H₁₄?

• Metals

• Polar covalent molecules

• Ionic compounds

• Nonpolar covalent molecules

Of the following molecules, which is the most polar?

• CO

• CO₂

• O₂

• HF

• F₂

Which of the following has the lowest melting point?

• Zn

• SiO₂

• CaCl₂

• C₂H₆

Which of the following is most likely to be soluble in water?

• NaF

• C₁₂H₂₂O

• Mn

• Cl₂

Intermolecular force present in HCl?

• dipole dipole
• dispersion
• H-bond
• ionic

Type of intermolecular force present in I₂, Br₂, and Cl₂.

• dipole dipole
• H-bond
• dispersion
• metallic

Which of the following has the highest boiling point?

• H₂
• NH₃
• N₂
• O₂

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

• atomic mass
• atomic number
• electronegativity
• ionization 

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.

Which of these typically increases when intermolecular forces increase?

• Boiling Point
• Melting Point
• Viscosity
• All of these