• Question: what is your opinion on Iodine?

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      Asked by 336newg39 to Aoife, Conor, Louise, Matthew on 17 Nov 2016.
      • Photo: Louise Mc Grath

        Louise Mc Grath answered on 17 Nov 2016:

        Hi 336newg39!

        Iodine, well I think Iodine is pretty awesome! I use Iodine fumes to show fingerprints on paper.. its actually pretty awesome! Here is a video which shows it being done:https://youtu.be/qI9KcU0neys?t=350
        The iodine gas is purple which is a colour that I like!
        It was also used to treat illnesses way back in the day so it is quite versatile, even today it play an important role in our thyroid gland as it helps control our growth rate!
        More information about where it is found and what it does can be found here on this nifty website: http://www.ducksters.com/science/chemistry/iodine.php

        All in all I give iodine the thumbs up because it can be used in forensic science! Super cool element!

      • Photo: Aoife Lucid

        Aoife Lucid answered on 17 Nov 2016:

        I like iodine, like Louise said it has a lot of uses.

        There is also a really cool experiment called the “iodine snake experiment” which is the decomposition of H2O2 (hydrogen peroxide) but KI (potassium iodide). Here is a video https://www.youtube.com/watch?v=x-7KpblfF4U

        You should ask your teacher if they can demonstrate it for you sometime!

      • Photo: Matthew Kitching

        Matthew Kitching answered on 18 Nov 2016:


        I think iodine is awesome!

        If you mix it with ammonia you can make a contact explosive that we use in demonstrations here at the uni

        its cooooool