IGCSE Chemistry: Extraction and uses of metals (Whole Unit)

This PowerPoint Presentation covers most of the requirements for the Extraction and Uses of Metals unit for Edexcel IGCSE Chemistry in a clear and coherent manner.

These slides may also be useful for other exam boards, such as AQA, WJEC, CIE, etc., if modified after download.

Specification statements covered include:

• 5.1 explain how the methods of extraction of the metals in this section are related to their positions in the reactivity series
• 5.2 describe and explain the extraction of aluminium from purified aluminium oxide by electrolysis, including:

i the use of molten cryolite as a solvent and to decrease the required operating temperature
ii the need to replace the positive electrodes
iii the cost of the electricity as a major factor

• 5.3 write ionic half-equations for the reactions at the electrodes in aluminium extraction
• 5.4 describe and explain the main reactions involved in the extraction of iron from iron ore (haematite), using coke, limestone and air in a blast furnace
• 5.5 explain the uses of aluminium and iron, in terms of their properties.