CH-650
Rusting
Chemistry · Secondary 3 · Hard · Rusting
Rusting of iron needs both water and oxygen. Three test tubes each contain an iron nail:
• Tube A: nail in completely dry air with a drying agent.
• Tube B: nail in boiled water covered with a layer of oil.
• Tube C: nail in tap water exposed to air.
In which tube will rust form most clearly after several days?
• Tube A: nail in completely dry air with a drying agent.
• Tube B: nail in boiled water covered with a layer of oil.
• Tube C: nail in tap water exposed to air.
In which tube will rust form most clearly after several days?
- Tube A only
- Tube B only
- Tube C only
- All three tubes
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