What concepts from previous topics could you use when explaining the phenomenon observed in PT?
e.g. chem bonding for melting and boiling points of elements, oxides, chlorides.
Question 2
2.
There is a trend for the oxides and chlorides of the elements in Period 3. Suggest what factor contributes towards such trend (e.g. pH of oxides and chlorides).
Question 3
3.
State the factor(s) affecting the pH of metal oxides (Na2O, MgO, Al2O3)
Question 4
4.
Sketch a graph of the melting points of the non-metal oxides.
Question 5
5.
Explain the difference in melting point of SiO2, P4O10 and SO3.
Question 6
6.
AlCl3 has a lower pH than MgCl2.
With reference to the reactions that occur, explain why.