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Science - Changes in materials

We started this topic with a very exciting (and messy) experiment! Each table had a cornflour mixture, which we learnt was a non-Newtonian fluid. As a group the children discussed the properties of this and how, and why, it could change from being a liquid to a solid and then back again!
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Outside we did an experiment whereby we threw balls of the cornflour mixture to each other and predicted what state the mixture would be in at each point.

 

We found that the cornflour made a solid ball in our hands and stayed solid as we threw it; but turned into a liquid on impact! Either when the children caught it or missed and it fell onto the floor and quickly the particles spread out to become a liquid.

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This week we learnt about changes of state. To help us do this we acted out the different states of matter - solid, liquid and gas, using scientific language such as bonds, particles and energy in our explanations.
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