2eExtraction and uses of metals

Syllabus objectives

• 2.22know that most metals are extracted from ores found in the Earth’s crust and that unreactive metals are often found as the uncombined elementSeparate Chemistry only
• 2.23explain how the method of extraction of a metal is related to its position in the reactivity series, illustrated by carbon extraction for iron and electrolysis for aluminiumSeparate Chemistry only
• 2.24be able to comment on a metal extraction process, given appropriate information detailed knowledge of the processes used in the extraction of a specific metal is not requiredSeparate Chemistry only
• 2.25explain the uses of aluminium, copper, iron and steel in terms of their properties the types of steel will be limited to low-carbon (mild), high-carbon and stainlessSeparate Chemistry only
• 2.26know that an alloy is a mixture of a metal and one or more elements, usually other metals or carbonSeparate Chemistry only
• 2.27explain why alloys are harder than pure metalsSeparate Chemistry only