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Properties of transition metals (chemistry only)

1.3.1 Comparison with Group 1 elements

What are the physical differences between group 1 & transition elements? (3)

Group 1 Transition metals
  • Low melting point
  • Low density
  • Soft
  • High melting point
  • High density
  • Strong, hard

What are the chemical differences between group 1 & transition elements? (3)

Group 1 Transition metals
  • Very reactive
  • Not used as catalysts
  • Form colourless / white compound
  • Low reactivity
  • Used as catalysts
  • Form coloured compound
1.3.2  Typical properties (transition metals)
Properties

High melting point, high density, strong, hard

  • Low reactivity, used as catalysts, form coloured compound, ions with different charges 

    Uses as catalysts

    • Manganese (IV) oxide increases decomposition of hydrogen peroxide to oxygen & water
      • 2H2O2 → 2H2O + O2
    • Iron for Haber process makes ammonia
      • N2 + 3H2 ⇌ 2NH3

       Nickel for manufacture of margarine

  • Others – Ions
  • Ions – a charged particle produced by loss / gain of mass