The Periodic Table

Year 11 - CCEA GCSE

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  • The Periodic Table
    • Groups
      • Group I - Alkali metals - very reactive metals
      • Group II - Alkaline earth metals - reactive metals
      • Group VII - Halogens - reactive nonmetals
      • Group 0 - Noble gases - unreactive non-metals
    • Groups
      • The Noble Gases
        • Colourless and Odourless gases.
        • Densities increase going down the group
        • Melting and boiling points increase going down the group.
        • Full outer shell
      • Halogens
        • They are poisonous
        • Exist as diatomic molecules
        • Melting and boiling points increase down the group
        • State and Colour at room temperature
          • Fluorine - pale yellow gas
          • Chlorine - pale green gas
          • Iodine - Dark grey solid sublimes on heating to give purple vapour
    • History of the periodic table
      • Newlands
        • Law of Octaves
        • Arranged by atomic mass
        • Didn't leave gaps for undiscovered elements.
        • Placed two elements into one position
        • Mixed up metals and non-metals
      • Mendeleev
        • Arranged by atomic mass
        • Arranged into Periods and Groups
        • Left gaps for undiscovered elements.
        • Predicted properties of missing elements
  • They are easily cut with a knife exposing a shiny surface. This shiny surface quickly tarnishes, becomes dull again.


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