Which describe colloids? check all that apply. heterogeneous mixtures homogeneous mixtures may have a uniform appearance are made up of at least two substances will settle out over time

Option (2), (3) and (4)

Explanation:

Colloids are the substances that are comprised of two or more particles that are comprised of large atoms (molecules), but they are so small that our naked eye can not identify them. These colloids are homogeneous mixture as a result of which they appear to be uniformly oriented. These particles do not have any definite shape but and their size usually ranges from 10⁻⁹ m to 10⁻⁶ m in size. Some of the examples of colloids are fog and smoke.

Thus, the correct answers are options (2), (3), and (4).