1-Describe what vapor pressure is
2-Explain why the vapor pressure depends on the temperature
3-Find the mathematical equation that relates vapor pressure with the temperature 
4-Define what is a boiling point 
5-Define Critical temperature 
6-Explain what is a phase diagram for solid, liquid and vapor of a substance
7-Describe the general properties of molecular substances 
8-What are dispersion forces, dipole forces, and hydrogen bonds?
9-Indicate the types of solids: network covalent, ionic and metals
10-Define what a unit cell in metals is; describe a simple cubic, face-centered cubic, and body-center cubic unit center cells