c4.6

• cation


  positively charged ion
• steps for flame test


  clean wire loop with hcl and then heat over a bunsen burner, then dip loop into compound, hold wire in flame and observe the colour the flame goes
• what colour flame will lithium produce


  crimson
• what colour flame will sodium produce


  yellow
• what colour flame will potassium produce


  lilac
• what colour flame will calcium produce


  orange-red
• what colour flame will copper produce


  green
• when reacted with sodium hydroxide what will Fe 2+ produce


  green precipitate
• when reacted with sodium hydroxide what will Fe 3+ produce


  brown precipitate
• when reacted with sodium hydroxide what will Ca 2+ produce

  white precipitate
• when reacted with sodium hydroxide what will Mg 2+ produce


  white precipitate
• when reacted with sodium hydroxide what will Cu 2+ produce


  blue precipitate