test for cations

• what colour is sodium when using the flame test

  yellow
• what colour is potassium during the flame test

  • lilac
• what colour is lithium during the flame test

  • crimsion red
• what colour is calcium

  • orange red
• what colour is copper

  blue is green
• why is sodium hydroxide used to test for ions

  • sodium hydroxide is toi test for metal ions that form insoluble metal hydroxides
• what colour is copper in the test with sodium hydroxide

  • blue
• what colour is aluminium with sodium hydroxide

  • aluminium preciptate is white but eventually redissolves to form a colourless solution
• what colour is calcium with the flame test

  • calcium is white
• what colour is iron 2 with sodium hydroxide

  green
• what colour is iron 3 with sodium hydroxide

  • brown