Question detail
Explain why iron left outside is more likely to corrode than iron kept dry indoors.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using materials
Question
Explain why iron left outside is more likely to corrode than iron kept dry indoors.
Answer
Iron left outside is exposed to both oxygen from the air and water from rain or moisture. These substances react chemically with iron to form rust, so the material is gradually damaged. Iron kept dry indoors has much less water available, so the rusting reaction is slowed or prevented.
Explanation
A strong answer links corrosion to chemical reactions with environmental substances. For iron, the key conditions are oxygen and water. Outdoor iron is exposed to both, while dry indoor iron lacks enough water for rapid rusting. This distinguishes corrosion from physical wear and connects the answer directly to rust prevention ideas in the Corrosion and its prevention subtopic.
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.
Related flashcards
Flashcard 1 of 5
Related practice questions
Question 1 of 5
Choose an answer, get feedback, then move sideways through the set.