Chemistry Paper 1C Jan 2012 Notes
- Created by: evie4learning
- Created on: 15-03-13 13:03
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Notes on questions I got wrong:
- iron compound present in rust:
Hydrated Iron oxide
- What type of reaction occurs in iron rusting?
Oxidation
- Galvanising prevents iron from rusting. What is iron coated with?
Zinc
- What object is suitable for glavanishing?
Bucket - water will be put inside it.
- Other ways to prevent iron from rusting:
- Oiling
- Painting
- Greasing
- Covering with plastic
- Coating with tin or aluminuim or below in reactivity series
- Attaching magnesium or zinc blocks (to ships)
- Amonmonium chloride - ions
Positive ion: NH4+ Negative ion: Cl-
How do you know if a substance contains ions?
It will be ionic if it is: a metal…
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