Group 7

• Group 7


  The halogens
• Group 7 trends


  • The melting points increase as you go down group 7
  • The boiling points increase as you go down group 7
  • The colours darken as you go down group 7
• The colour and physical states of chlorine, bromine and iodine at room temperature:

  The colour and physical states of chlorine, bromine and iodine at room temperature:

  A) Pale green

  B) Gas

  
• The colour and physical states of chlorine, bromine and iodine at room temperature:

  The colour and physical states of chlorine, bromine and iodine at room temperature:

  A) Brown

  B) Liquid

  C) Orange

  
• The colour and physical states of chlorine, bromine and iodine at room temperature:

  The colour and physical states of chlorine, bromine and iodine at room temperature:

  A) Purple-black

  B) Solid

  C) Purple

  
• The colour of chlorine, bromine and iodine when dissolved in water:

  The colour of chlorine, bromine and iodine when dissolved in water:

  A) Colourless solution

  
• The colour of chlorine, bromine and iodine when dissolved in water:

  The colour of chlorine, bromine and iodine when dissolved in water:

  A) Orange solution

  
• The colour of chlorine, bromine and iodine when dissolved in water:


  The colour of chlorine, bromine and iodine when dissolved in water:

  A) Brown Solution

  
• • Names of elements of Group 7 end in 'ine' e.g Cl2 = Chlorine
  • The name of their ions end in 'ide', e.g Cl = Chloride
• Halogens are toxic