Group 2

jodieamelia
Mind Map by jodieamelia, updated more than 1 year ago
jodieamelia
Created by jodieamelia about 7 years ago
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A-Levels Chemistry Mind Map on Group 2, created by jodieamelia on 05/13/2013.
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Group 2
1 physical properties
1.1 reasonably high melting point
1.2 light metals with low density
1.3 form colourless compounds
2 reaction with oxygen: redox reaction
2.1 e.g. 2Ca (s) + O2 (g) ------> 2CaO (s)
2.1.1 Metal + oxygen forms Metal oxide
3 reaction with water
3.1 Metal + water forms Metal hydroxide and hydrogen
3.2 observation: solid dissolves
4 oxides/hydroxides + acid -----> base + water
4.1 observation: solid dissolves
5 thermal Decomposition: decomposed by heat to form metal oxide and carbon dioxide gas
6 uses of hydroxides
6.1 calcium hydroxide: used as lime to neutralise acid soils
6.2 magnesium hydroxide: used to relieve indigestion, by neutralising stomach acid
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