BBC Learning Zone Clips

CLIP 4407

Alkali metals

Alkali metals
Key Info
  • Alkali metals
  • Duration: 02:08
  • A demonstration of the relative speeds of surface corrosion of alkali metals and their reaction with water. The alkali metals are all soft metals that can be cut with a knife. They all react quickly with oxygen in air and with water. The rate of reaction increases as you go down the group in the periodic table.
  • Subject:



    Chem: Periodic Table and Atomic Structure

  • Keywords: group, corrosion, reactivity, alkali metals, pattern, elements, periodic table, chemistry, bitesize
Ideas for use in class
  • This can supplement the usual demonstrations of the reactivity of sodium and potassium in the laboratory.
Background details
  • Clip language : English
  • Aspect ratio : 16x9

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