(a)[1]
How does this equation indicate that the nickel(II) oxide is reduced?
(b)[1]
What does the symbol $\rightleftharpoons$ show?
(c(i))[1]
Suggest why the nickel formed can be separated easily from the carbon monoxide.
(c(ii))[1]
State one harmful effect of carbon monoxide on health.
(d(i))[2]
Describe two physical property differences between nickel and potassium.
(d(ii))[1]
Describe one property difference between nickel(II) chloride and potassium chloride.
(e(i))[2]
Complete the table to predict the boiling point of rubidium and the relative reactivity of rubidium with water.
(e(ii))[1]
Describe the overall trend in the density of the Group I elements.