Tuesday, September 21, 2010

Plastic Rock... can it be!

Science experiments… Yippee!  Plastic rock flows like a thick liquid and then solidifies when you squeeze it or subject it to an abrupt force.  Put 1 cup cornstarch in a pan and add 2/3 cup water; stir until evenly mixed.  Next add ½ cup more cornstarch.  As you mix it, it should solidify.  Leave it alone, it should liquefy again.  Put some in your hand… squeeze – solid, cup your hand – liquid. 

The above experiment is from the Physical Science book (ed. 2) p. 136-137.

More on this experiment in a few weeks.....

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