(a(i))[1]
The table gives some properties of the Group IV elements. Predict the density of tin.
(a(ii))[1]
Describe the overall pattern in the boiling points of the Group IV elements.
(a(iii))[1]
Predict the state of silicon at $1600\,^{\circ}\text{C}$. Give a reason to support your answer.
(b(i))[4]
The structures of two silicon compounds, P and Q, are shown. Explain, in terms of structure and bonding, why compound P has a high melting point and compound Q has a low melting point.
(b(ii))[1]
Draw a dot-and-cross diagram for a molecule of compound Q. Show only the outer-shell electrons.
(c)[2]
A compound made from carbon, hydrogen and silicon has the formula $\text{Si(CH}_3)_4$. Calculate the percentage by mass of carbon in this compound.