Question

2. Draw the Lewis structure, give the VSEPR shape around the central atom, and rank the molecules from lowest to highest boiling point, then lowest to highest surface tension: ICl5, SiH4, SF6

3. SiO2 seems like it would be the same shape as CO2, but SiO2 is the formula for glass and quartz. If SiO2 were the same shape as CO2, draw the SiO2 Lewis structure and draw the phase separation lines you expect this pretend SiO2 to have on the phase diagram of CO2. Comparison is important rather than exact values. http://www.printablediagram.com/co2-phase-diagrams/