(a(i))[2]
Balance the equation for the initial stage of this extraction. $\text{TiO}_2 + [BLANK]\text{C} + [BLANK]\text{Cl}_2 \rightarrow \text{TiCl}_4 + 2\text{CO}$
(a(ii))[1]
Explain why the change from carbon to carbon monoxide is an oxidation reaction.
(b)[2]
Describe two differences between the physical properties of titanium and sodium.
(c(i))[2]
Complete the table for lithium's relative reactivity with water, and predict potassium's melting point.
(c(ii))[1]
Describe the overall trend in density for Group I elements.
(d)[1]
Is lithium oxide acidic or basic? Explain your reasoning.