Nota Terkini

Monday, February 08, 2010

[Science Form 3] Reactions

Most metals react with oxygen to form metal oxide.

Metal + Oxygen -------> Metal oxide
Eg:
  • Zinc + Oxygen -------> Zinc oxide
  • Aluminium + Oxygen -------> Aluminium oxide

Most metals react with sulphur to form metal sulphide

Metal + Sulphur -------> Metal sulphide
Eg:
  • Zinc + Sulphur -------> Zinc sulphide
  • Iron + Sulphur -------> Iron sulphide

Metal + sulphide -------> Final product
  1. Magnesium + Sulphur ----heat---> Magnesium sulphide
  2. Aluminium + Sulphur ----heat---> Aluminium sulphide
  3. Zinc + Sulphur ----heat---> Zinc sulphide
  4. Iron + Sulphur ----heat---> Iron sulphide

Metal + oxide -------> Final product
  1. Magnesium + Oxygen ----heat---> Magnesium oxide
  2. Aluminium + Oxygen ----heat---> Aluminium oxide
  3. Zinc + Oxygen ----heat---> Zinc oxide
  4. Iron + Oxygen ----heat---> Iron oxide

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