• Question: whats your favoruit chemical ?

    Asked by libya4life to Sarah, Dalya on 13 Jun 2011. This question was also asked by maisha07.
    • Photo: Dalya Soond

      Dalya Soond answered on 13 Jun 2011:

      Water…or H20

    • Photo: Sarah Thomas

      Sarah Thomas answered on 13 Jun 2011:

      Mine is liquid nitrogen. You have to keep it super cool to keep it in the liquid form as nitrogen biols at -196 degrees C! It’s really useful in the lab, I use it all the time to freeze dry things (freeze drying is how they remove all the water from food to take it up into space!)

      I do lab tours for the general public in my department and I always show them the liquid nitrogen! I do demos where you make ice cream with it or freeze a banana and then use it to hammer a nail into a piece of wood!

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