Alkali metals and halogens

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  • Alkali metals and Halogens
    • Alkali Metals (group 1)
      • their trend in reactivity can be established by investigating reactions with...
        • water
        • group 7 elements
        • oxygen (corrosion of newly exposed to the air or burning)
      • lithium, sodium and potassium react with water
        • water
      • flame tests show the presence of lithium, sodium and potassium ions
        • there are ionic equations for these reactions
    • Halogens (group 7)
      • their trend in reactivity can be established by investigating reactions with iron
      • displacement reactions can be used to...
        • confirm the trend in reactivity within the group
        • make predictions based on this trend
        • write/ interpret word/ balanced symbol equations for the reactions
    • there are trends in reactivity with both, and balanced word/ symbol equations can be written and interperated
      • Halogens (group 7)
        • their trend in reactivity can be established by investigating reactions with iron
        • displacement reactions can be used to...
          • confirm the trend in reactivity within the group
          • make predictions based on this trend
          • write/ interpret word/ balanced symbol equations for the reactions
      • Alkali Metals (group 1)
        • their trend in reactivity can be established by investigating reactions with...
          • group 7 elements
          • oxygen (corrosion of newly exposed to the air or burning)
        • lithium, sodium and potassium react with water
          • flame tests show the presence of lithium, sodium and potassium ions
            • there are ionic equations for these reactions
      • the tests mentioned can be used in problem-solving situations to plan and carry out procedures to identify substances

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