non-Newtonian liquid
Glassware: -2 beaker
-1 a glass or plastic container
protective equipment needed: any because there are no dangerous products to use and there can be no projection in the eyes. (we can still wear glasses for style)
material:we need water and cornstarch
time: the preparation time is a few minutes and it is possible to save the preparation for two days
objective: the objective sought is to create a liquid which escapes the laws of Newton. To put it simply, it's a liquid we can walk on
possible risk danger: this experience involves no risk except to get a little dirty
hypothesis: can a substance be both liquid and solid?
protocol:- pour two beakers of cornstarch into a container
-pour a beaker of water into the container, then pour a second beaker but this time little by little
-to know if it's ready: quickly hit the surface with your fingertips:
If the mixture is too plastery add a spoon of water.
If the mixture is too liquid add a little cornstarch.
Result: you get a liquid that you can walk on. It is both liquid and solid
Analysis: To test it put the liquid in the hollow of your left hand, then with the right hand try to make a dumpling. Surprise: it works but as soon as you stop kneading … the dumpling becomes liquid again.
Conclusion: a substance can have the properties of a solid and a liquid.
It is possible to run on a swimming pool filled with non-Newtonian liquid
but if we stop we sink
