Group 2

Description

A-Levels Chemistry Mind Map on Group 2, created by jodieamelia on 13/05/2013.
jodieamelia
Mind Map by jodieamelia, updated more than 1 year ago
jodieamelia
Created by jodieamelia over 11 years ago
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Resource summary

Group 2
  1. physical properties
    1. reasonably high melting point
      1. light metals with low density
        1. form colourless compounds
        2. reaction with oxygen: redox reaction
          1. e.g. 2Ca (s) + O2 (g) ------> 2CaO (s)
            1. Metal + oxygen forms Metal oxide
          2. reaction with water
            1. Metal + water forms Metal hydroxide and hydrogen
              1. observation: solid dissolves
              2. oxides/hydroxides + acid -----> base + water
                1. observation: solid dissolves
                2. thermal Decomposition: decomposed by heat to form metal oxide and carbon dioxide gas
                  1. uses of hydroxides
                    1. calcium hydroxide: used as lime to neutralise acid soils
                      1. magnesium hydroxide: used to relieve indigestion, by neutralising stomach acid
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