Drying droplets have fascinated scientists for decades. From water to coffee to paint, these everyday fluids leave behind ...

Students will apply tests, based on physical properties of matter samples, to determine whether a heterogeneous mixture is a suspension or a colloid. Part of science is learning how to ask questions ...

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The reason for this is that the urine of a healthy person also contains colloids that prevent the precipitation of substances in such supersaturated solutions, as long as their degree of ...

In the presence of negative ions GNPs form a pink colloidal suspension. If the charge is screened by adding salt, the GNPs aggregate, turning the mixture blue. Li and Rothberg observed that ssDNA ...