Recipe for Goo.

This is my all time favourite kitchen science recipe. It is I think what might be scientifically called a solid-liquid, but I am no great scientist and I am not sure if it is actually a scientific state of matter: http://en.wikipedia.org/wiki/State_of_matter

But what I do know is that it is a bit like quicksand in that when the material is compressed it acts like a solid and when it is let go of it behaves more like a liquid.

Several years ago some bright spark make a quick fortune selling the stuff brightly coloured in cool packaging and called it Oobleck.

Anyway, here is the recipe:

           One 8 oz cup or mugful of cornflour/cornstarch

           A half cup (4oz) of water

           Mix together in a bowl.

          The gloop should go solid when squeezed in your hand and then instantly go runny when you
          let go.

          If the gloop is too runny add a bit more cornflour until the consistency is just right.

          For good effect, add a drop or two of food colouring.