Write down the equation for the reaction between magnesium and oxygen. Use labelled arrows to show which element is oxidised and which is reduced.

Potassium and chlorine react to form potassium chloride.

It is a redox reaction. Explain why.

Potassium and chlorine react to form potassium chloride.

Write the balanced half-equations for it.

Bromine displaces iodine from a solution of potassium iodide.

Write the balanced half-equations for this reaction.

Bromine displaces iodine from a solution of potassium iodide.

Write the balanced half- equations and add the half-equations, to give the ionic equation for the reaction.