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REACTIVITY SERIES

1.    recall the reactivity series of metals, including K, Na, Ca, Mg, AI, Zn, Fe and Cu;
2.    describe the reactions, if any, of the above metals with the following and describe how to collect the gas produced, where appropriate:
•    air;
•    water; and
•    steam;
3.    explain how the reactivity of metals is related to the tendency of a metal to form its positive ion;

 Explain and describe the displacement reactions of metals with other metal ions in solution

Collect and/or analyse experimental data to predict where an unfamiliar element should be placed in the reactivity series or make predictions about how it will react;

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4.    examine the relationship between the extraction of a metal from its ore and its position in the reactivity series, for example:

•    aluminium, a reactive metal, is extracted by electrolysis; and

•    iron, a less reactive metal, is extracted by chemical reduction;    

Recall that the Earth's resources of metal ores are limited and that alternative extraction methods, such as phytomining, are used.

5 recall the following aspects of phytomining:
•    plants are used to absorb metal compounds such as copper(ll) compounds;
•    the plants are harvested, then burned to produce ash, which contains the metal compounds;
•    an acid is added to the ash to produce a solution containing dissolved metal compounds (leachate);
•    copper can be obtained from these solutions by displacement using scrap iron; and
•    this technique avoids traditional mining methods of digging, moving and disposing of large amounts of rock;

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