Powerpoint lecture covering the following in a modern, concise format:
Specification Point 2.22C - 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.
Specification Point 2.23C - 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.
Specification Point 2.24C - Be able to comment on a metal extraction process, given appropriate information.
Specification Point 2.25C - Explain the uses of aluminium, copper, iron and steel in terms of their properties.
Specification Point 2.26C - Know that an alloy is a mixture of a metal and one or more elements, usually other metals or carbon.
Specification Point 2.27C - Explain why alloys are harder than pure metals.
Complete set of Chapter 4 Lectures are available.
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