Lawrie Ryan and Roger Norris Solutions for Chapter: Chemical Bonding, Exercise 17: Question

Explain the following difference in terms of the type of bonding present.

          Aluminium oxide has a melting point of 2980 °C but aluminium chloride changes to a vapour at 178 °C. 

Explain the following difference in terms of the type of bonding present.

      Magnesium chloride conducts electricity when molten but not when solid. 

Explain the following difference in terms of the type of bonding present.

 Iron conducts electricity when solid but the ionic solid iron(II) chloride does not conduct when solid. 

Explain the following difference in terms of the type of bonding present.

                         Sodium sulfate dissolves in water, but sulfur does not.

Explain the following difference in terms of the type of bonding present:

Propanol, ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_2\mathrm{OH}$ , is soluble in water but propane ${\mathrm{CH}}_3{\mathrm{CH}}_2{\mathrm{CH}}_3$, is not.

Explain the following difference in terms of the type of bonding present:

A solution of hydrogen chloride in water conducts electricity.