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The pH of cornstarch is usually around 7, making it neutral. Cornstarch does not significantly impact the pH of a solution it is added to.
No, cornstarch is not considered acidic. It is a neutral substance.
Yes, you can separate cornstarch from water by letting the mixture sit until the cornstarch settles to the bottom, then carefully pouring off the water. You could also use centrifugation to separate the cornstarch by spinning the mixture at high speed to force the cornstarch to the bottom of the container.
The size of a cornstarch particle can vary, but on average it ranges from 1 to 100 micrometers in diameter.
No, you cannot separate cornstarch from water using filter paper alone because cornstarch particles are too small to be captured by the filter paper. You would need to use a more advanced separation technique like centrifugation or evaporation to separate cornstarch from water effectively.
The water actually passes through the filter paper and the cornstarch. However, the cornstarch does not pass through the filter because the molecules are to large.