How Fluid Cornstarch Responds to Change in Temperature, and Pressure
The purpose of this lab was to find out how matter (fluid cornstarch) reacts to change in pressure, and temperature. This is important because we needed to find out if all matter fits into a property.
I think that if you heat the fluid cornstarch, then it will start to melt, and if you make it colder them it will get stiff, and more solid like. I also think that if you apply pressure to the fluid cornstarch, then if will get runny, and watery, like a liquid, but if you don’t apply pressure then it will be solid like.
We were given the following materials:
Fluid cornstarch
Ice
Hot water
Thermometer
Plastic cups
Old newspapers for protecting the tables
Procedure:
Put the cup of fluid cornstarch inside a bowl of ice so that the fluid cornstarch, and the ice do not mix. Leave the cup in the bowl for about ten minutes so the fluid cornstarch can cool down.
Feel the fluid cornstarch for texture, and consistency.
Put the cup of fluid cornstarch inside a beaker with of hot water so the fluid cornstarch, and the hot water do not mix. Leave the cup in the beaker for about ten minutes so the fluid cornstarch can get warm.
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Put your hand inside the cup of fluid cornstarch, and squeeze about a handful of fluid cornstarch, and observe. Then release pressure and observe.
Data
Variable
Effect the change in the variable had on the fluid cornstarch
Heat (46.5*C)
With heat the fluid cornstarch got warm, and sticky.
Cold (22.9*C)
With the cooler temperature, the fluid cornstarch was runny, and liquid like, and then it turned stiff, and solid like.
High Pressure
With pressure, the fluid cornstarch compressed to the shape the pressure is applied in.
Lower Pressure
When pressure is released, the fluid cornstarch gets runny, and like a liquid. It feels like it is melting in your hands.
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