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Metal extraction, corrosion and recycling · GCSE Chemistry · Courselo

Courselo

GCSE Chemistry
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Chemical changes and electrolysis

Metal extraction, corrosion and recycling

Chemical changes and electrolysis · Lesson 4 of 6

Lesson 4 of 6

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Unit 4

Chemical changes and electrolysis

6 lessons · 9 h 15 min of study

Acids, alkalis, pH and neutralisation1 h 30 min of study
Salts, solubility and preparation methods1 h 30 min of study
Redox, the reactivity series and displacement1 h 45 min of study
Metal extraction, corrosion and recyclingReading · 0%
Electrolysis of molten and aqueous substances2 h of study
Industrial electrolysis and electroplating1 h of study

This unit is ≈17% of the GCSE Chemistry, across 6 lessons. Full syllabus

Lesson 4 of 6 · Chemical changes and electrolysis

Metal extraction, corrosion and recycling

3 quick checks≈3% of the testCore: Core: tested on most papers

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By the end you’ll be able to

explain why unreactive metals can occur native but more reactive metals are found as compounds such as oxides
explain that metals less reactive than carbon can be extracted from their oxides by reduction with carbon or carbon monoxide
explain that metals more reactive than carbon are extracted by electrolysis of molten compounds

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Adaptive questions on metal extraction, corrosion and recycling.

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describe oxidation as the loss of electrons by metals during extraction and corrosion processes

describe rusting as the corrosion of iron and state that both oxygen and water are required

explain methods used to reduce corrosion and evaluate the advantages and disadvantages of recycling metals compared with extracting them from ores

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