Using Materials (AQA GCSE Chemistry): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is corrosion?
What is corrosion?
Metals deteriorating via chemical reactions
What two substances must iron react with for rusting to occur?
What two substances must iron react with for rusting to occur?
Oxygen and water
What is the chemical name for rust?
What is the chemical name for rust?
Iron oxide
What does corrosion do to the structural integrity of metals?
What does corrosion do to the structural integrity of metals?
Reduces it
How does a protective layer prevent corrosion?
How does a protective layer prevent corrosion?
Prevents chemical reactions with environment
Why are ship hulls painted?
Why are ship hulls painted?
To prevent seawater corrosion
What does electroplating use to coat a metal object?
What does electroplating use to coat a metal object?
An electrical current
What does greasing prevent from reaching the metal surface?
What does greasing prevent from reaching the metal surface?
Moisture and oxygen
What protective layer does aluminium form naturally when it corrodes?
What protective layer does aluminium form naturally when it corrodes?
Aluminium oxide
Why does aluminium oxide stop further corrosion of aluminium?
Why does aluminium oxide stop further corrosion of aluminium?
It is inert and doesn't react further
Which metal is used to coat iron in galvanisation?
Which metal is used to coat iron in galvanisation?
Zinc
Why does zinc protect iron in galvanisation?
Why does zinc protect iron in galvanisation?
Zinc corrodes in preference to iron