Question

what are colloids....​

Answer 1

$\huge\mathfrak\red{ANSWER}$

✍ Colloids are heterogeneous mixtures in which the particle size is too small to be seen with naked eyes but is big enough to scatter light.

Answer 2

Colloid are a homogeneous non-crystalline substance consisting of large molecules or ultramicroscopic particles of one substance dispersed through a second substance.

Colloids include gels, sols, and emulsions; the particles do not settle, and cannot be separated out by ordinary filtering or centrifuging like those in a suspension.