Question detail
Which statement gives the best GCSE definition of corrosion?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Using materials
Question
- A. Destruction of a material by chemical reactions with substances in its surroundings
- B. Softening of a metal because it has been heated strongly
- C. Changing the shape of a material by physical wear only
- D. Making an alloy by mixing a metal with another element
Answer
The correct option is Destruction of a material by chemical reactions with substances in its surroundings.
Explanation
The correct option is "Destruction of a material by chemical reactions with substances in its surroundings" because it supports the approved learning objective: Define corrosion as the destruction of materials by chemical reactions with substances in the environment. (Chemistry only). The other options are incorrect or weaker because they are vague, use the wrong Chemistry context, or do not clearly explain the answer for Corrosion and its prevention.
Common mistake
Misunderstanding Corrosion
Students often define corrosion only as rusting, failing to recognize it as a broader process affecting various materials.
Emphasize that corrosion is the destruction of materials by chemical reactions with substances in the environment, not limited to just iron or rusting.
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