Chemistry 3.1

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  • Chemistry 3.1
    • Elements arranged in a periodic table
      • grouped in elements with similar properties
    • John Newlands
      • built on Dalton's ideas
      • arranged elements in order of mass
      • every eight element similar
      • law of octaves
      • work ignored
        • no gaps left for unknown elements
    • Dmitri Mendeleev
      • arranged elements in order of atomic weights
      • predicted properties of unknown elements
    • group 1 metals
      • stored in oil
        • prevent from reacting with oxygen
      • alkali metals
      • form ions with H + charge
      • low density-float on water
      • reactivity
        • increases down the group
      • soft
        • can be cut with a knife
      • melting point decreases down the group
      • react vigorously with non metals
        • form ionic compounds
      • water
        • hydrogen + metal hydroxide
    • Group 7 elements
      • halogens
      • melting point
        • increase down group
      • reactivity
        • decreases down the group
      • + metal
        • ionic compound
      • flourine
        • yellow
        • gas at rm temp
      • ionic bond
        • halide ion
      • chlorine
        • green
        • gas at rm temp
      • bromine
        • red-brown
        • liquid at rm temp
      • iodine
        • purple
        • solid at m temp
    • transition metals
      • strong
      • good conductors
      • malleable
      • sonourous
      • ductile
      • high density
      • high melting point
      • hard
      • copper
        • Cu 2+
          • blue
      • iron
        • Fe 2+
          • green
        • Fe 3+
          • brown
      • used as catalysts
        • nickel
          • hydrogenation
          • margarine
        • iron
          • haber process
          • hydrogenation
  • transition metals
    • strong
    • good conductors
    • malleable
    • sonourous
    • ductile
    • high density
    • high melting point
    • hard
    • copper
      • Cu 2+
        • blue
    • iron
      • Fe 2+
        • green
      • Fe 3+
        • brown
    • used as catalysts
      • nickel
        • hydrogenation
        • margarine
      • iron
        • haber process
        • hydrogenation

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