(a)[1]
Finish the diagram so that the electrons in the covalent bonds of a water molecule are shown.
(b)[2]
Give two physical properties that differentiate a simple covalent compound from an ionic compound.
(c)[2]
Arrange these metals in order of reactivity, starting with the least reactive metal.
(d(i))[2]
State the conditions that must be present for iron to rust.
(d(ii))[2]
State two methods used to prevent rust.
(e)[2]
Describe how a pure dry sample of copper(II) sulfate crystals could be obtained.
(f)[2]
Complete the chemical equation that shows the combustion of butene.\n$\text{C}_4\text{H}_8 + 6\text{O}_2 \rightarrow ....\text{CO}_2 + ....\text{H}_2\text{O}$