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 ...

This liquid metal colloid is a mixture of the same GaInSn alloy (though other gallium alloys work too) and aluminium nitride particles. But rather than just throwing them all in a tub and stirring ...

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 ...