(a(i))[1]
Name the type of bonding that exists between the atoms in an N$_2$ molecule.
(a(ii))[1]
Explain, in terms of attractive forces between particles, why nitrogen has a low melting point.
(a(iii))[1]
Explain why nitrogen does not conduct electricity.
(b)[4]
State the essential conditions in the Haber process. Write an equation for the chemical reaction.
(c)[1]
Balance the chemical equation for this reaction. $\ldots$NH$_4$Cl + Ca(OH)$_2$ → $\ldots$NH$_3$ + CaCl$_2$ + $\ldots$H$_2$O
(d)[2]
Complete the dot-and-cross diagram to show how electrons are arranged in a hydrazine molecule. Show outer electrons only.
(e(i))[1]
State what is meant by the term base.
(e(ii))[1]
Write a chemical equation for the reaction between one molecule of hydrazine, N$_2$H$_4$, and one molecule of water.