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Groups 1,7 & 8 - Coggle Diagram
Groups 1,7 & 8
Alkali metals
Physical
Solid
Soft
Melting & boiling points
Relatively low
Going down group 1 = decrease
Density
Low
Good conductors
Chemical
Reaction with water
Metal hydroxide & hydrogen
Equation = 2Na(s)+2H2O(l) -> 2NaOH(aq)+H2(g)
Reactivity
Relatively high
Going down group 1 = increase
Reaction with oxygen
Caustic metal oxides
Stored in oil
Halogens (non-metals)
Physical
Melting, boiling points
Relatively low
Going down group 7 = increase
Different states
F2, Cl2 = gas
Br2 = liquid
I2 & At2 = solid
Density
Going down group 7 = increase
Chemical
Reactivity
Relatively high
Going down group 1 = decrease
Reaction with metals
Forms salt
Most reactive metal displaces others (displacement reaction)
A+BC -> AC+B
Noble gases (non-metals)
Physical
Gases
Melting & boiling point
Relatively low
Going down group 8 = increase
Density
Relatively low
Going down group 8 = increase
Chemical
Inert = non-reactive
Non-flammable