GCSE Chemistry – What is Corrosion and How to Stop it (2026/27 exams)

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*** WHAT’S COVERED ***
1. Understanding corrosion.
2. The chemistry of rusting.
3. Conditions needed for rusting.
4. Nature of corrosion products.
5. Methods to prevent iron from rusting.
* Barrier methods: Preventing oxygen and water from reaching the iron.
* Sacrificial methods: Using a more reactive metal to corrode.
* Galvanising: Coating iron with zinc.

*** EXAM BOARD INFO ***
AQA – Separate/triple science only
IGCSE Edexcel – All suitable for your course
Edexcel – Separate/triple science only
OCR 21st Century – Separate/triple science only
OCR Gateway – Separate/triple science only

*** CHAPTERS ***
0:00 What is Corrosion?
0:16 Rusting: Iron + Oxygen + Water
0:42 Rusting as a Redox Reaction
1:31 Conditions Required for Rusting
1:51 Experiment: Conditions for Rusting
2:54 Corrosion: Surface Phenomenon (Iron vs Aluminium)
3:58 How to Prevent Rusting
4:07 Barrier Methods: Painting, Oiling, Electroplating
4:58 Sacrificial Methods
5:23 Galvanising: Barrier & Sacrificial Protection

*** PLAYLISTS ***

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