Practice Activity: Rusting Of Iron (2.5) - Physical and Chemical Changes

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9 questions

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Exercise
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6 sample questions

Question 1.
What substance is formed when iron rusts?
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Think of the color of rust.
Question 2.
Name one method to prevent rusting.
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Consider what we discussed about covering surfaces.
3Question 3.
What is rust?
- Iron
- Iron oxide
- Water
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It's something you see forming on old iron.
4Question 4.
Rusting is a reversible change.
- True
- False
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Think about overcoming the rust once it's formed.
Question 5.
A new type of paint claims to stop rusting for ten years. Conduct a study to compare the rusty nails exposed to air with regular painted nails after five years. What will you observe?
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Think about how long rust takes to form under normal conditions.
Question 6.
Analyze the role of galvanization in preventing rusting and compare it to other methods like oiling.
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Consider how long each method lasts against the elements.

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