AP Chemistry Q3 Extra Credit

Intermolecular forces for: CO₂

• Dispersion Force

• Dipole dipole

• Hydrogen bonding

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.

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 type of IMF is pictured above?

• Dipole-Dipole Interaction

• Ion-Dipole Interaction

• Hydrogen Bonds

• Covalent Bond

• Ionic Bond

Which molecule will have hydrogen bonds with other molecules in the sample?

• a) CO₂

• b) HCN

• c) C₂H₂

• none of the above

Crystalline solids _____

• have their particles arranged randomly

• have highly ordered structures

• are usually very soft

• exist only at high temperatures

The shape of a liquid's meniscus is determined by ____.

• the viscosity of the liquid

• the type of material the container is made of

• the relative magnitudes of cohesive forces in the liquid and adhesive forces between the liquid and its container

• the amount of hydrogen bonding in the liquid

Which type of solid has mobile electrons in the crystal (sea of electrons)?

• Ionic

• Molecular

• Metallic

• Covalent Network

Which type of solid typically has the lowest melting point of the four types of crystals?

• Ionic

• Molecular

• Metallic

• Covalent Network