know that most metals are extracted from ores found in the Earth’s crust and that unreactive metals are often found as the uncombined element
know that most metals are extracted from ores found in the Earth’s crust and that unreactive metals are often found as the uncombined element
explain 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 aluminium
be 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 required
explain 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 stainless
know that an alloy is a mixture of a metal and one or more elements, usually other metals or carbon
explain why alloys are harder than pure metals