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Lesson Sequence

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C1 part 1 C1 Lesson 19 Recycling C1 Lesson 21 Transistion Metals
Year 9

Learning outcomes and Specification referenceEdit

C1.3.2 Alloys C1 Lesson 20 Alloys
a Iron from the blast furnace contains about 96% iron. The impurities make it brittle and so it has limited uses. Know the difference between iron from the blast furnace and steel in terms of less carbon in steel than iron from the blast furnace.
b Most iron is converted into steels. Steels are alloys since they are mixtures of iron with carbon. Some steels contain other metals. Alloys can be designed to have properties for specific uses. Low-carbon steels are easily shaped, high-carbon steels are hard, and stainless steels are resistant to corrosion. Know that the many types of steel are really alloys.
c Most metals in everyday use are alloys. Pure copper, gold, iron and aluminium are too soft for many uses and so are mixed with small amounts of similar metals to make them harder for everyday use. Know that alloys have improved properties as a result of the combination of metal atoms.

Full Specification TextEdit

a) Iron from the blast furnace contains about 96% iron. The impurities make it brittle and so it has
limited uses.
b) Most iron is converted into steels. Steels are alloys since they are mixtures of iron with carbon. Some
steels contain other metals. Alloys can be designed to have properties for specific uses. Low-carbon
steels are easily shaped, high-carbon steels are hard, and stainless steels are resistant to corrosion.
c) Most metals in everyday use are alloys. Pure copper, gold, iron and aluminium are too soft for many uses
and so are mixed with small amounts of similar metals to make them harder for everyday use.

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References to lessons and resources in commercial schemesEdit

Nelson ThornesEdit

OUPEdit

Harper CollinsEdit

Longman/PearsonEdit

HodderEdit