Using Materials (AQA GCSE Chemistry): Flashcards
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12 cards from this deck
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Practise the cards
12 cards from this deck
Define corrosion
Define corrosion
Process where metals deteriorate via chemical reactions with environment
Most well-known form of corrosion
Most well-known form of corrosion
Rusting
What iron reacts with to rust
What iron reacts with to rust
Oxygen and water
Chemical name for rust
Chemical name for rust
Iron oxide
Effect of corrosion on metals
Effect of corrosion on metals
Reduces their structural integrity
How painting prevents corrosion
How painting prevents corrosion
Acts as protective barrier stopping reactions
What is electroplating
What is electroplating
Coating metal with another metal using electrical current
What greasing prevents contacting metal
What greasing prevents contacting metal
Moisture and oxygen
Protective coating aluminium forms naturally
Protective coating aluminium forms naturally
Aluminium oxide
Property of aluminium oxide layer
Property of aluminium oxide layer
Inert - stops further corrosion
What galvanisation involves
What galvanisation involves
Coating metal with more reactive metal like zinc
In galvanisation, which metal corrodes first
In galvanisation, which metal corrodes first
Zinc (more reactive, provides sacrificial protection)