Chemistry - Extraction of Metals

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When metals react with water, observations can be easily made. e.g. fizzing, effervescing, flame colour.

Order of reactivity:

  • Potassium - lilac flame
  • Sodium - yellow flame
  • Lithium - red flame
  • Calcium -
  • Magnesium
  • Zinc
  • Iron
  • Copper

Magnesium does not react with water, but it does react with steam. Zinc is protected by a layer of oxide, which makes it unreactive, so it is used as a galvaniser for roofing, and buckets. Iron rusts with water. There is not reaction between copper and water.

All of the above are increasingly reactive with acid

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