Chem - Elements for Life 11.2

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The s block: Groups 1 and 2

Charlotte Jones

  • Group 1 elements are metals known as alkali metals.
  • Group 2 elements are metals known as alkaline earth metals.

Physical Properties

  • Soft, weak metals.
  • Low melting points.
  • Low boiling points.
  • Very reactive.

Chemical reactions

Reactions of elements with water

  • All the elements react with water to form hydroxides and hydrogen.
  • The vigour of the reaction increases as you go down the groups.

General equation for reactions:

(Group 1)     2Li + 2H2O ----> 2LiOH + H2                (Li can be replaced with any Group 1 element)

(Group 2)  

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