Elements and the periodic table > reactivity series

In this experiment copper(II) oxide and zinc metal are reacted together. The reaction is exothermic and the products can be clearly identified. The experiment illustrates the difference in reactivity between zinc and copper and hence the idea of competition reactions.
 

Copper(II) oxide reacts with magnesium

The position of carbon in the 

Oxygen is bubbled through solutions of potassium sulfide, chloride, bromide and iodide to establish which non-metallic elements are displaced from their compounds by oxygen. Then chlorine water is added to the same solutions to establish which elements are displaced by chlorine. Finally the class can decide to which solutions bromine water should be added to complete this displacement series for

This lesson is designed to exemplify an argumentation approach to practical work, using a ‘predict, observe, explain’ framework.