Question

d. a solid changes to a gas

1. which is a characteristic of a colloid?

a. particles settle quickly
b. particles scatter light
c. particles are visible to naked eye
d. particles dissolve completely

Explanation:

Colloids have particles that are in - between the size of a solution and a suspension. The Tyndall effect, which is the scattering of light by particles, is a characteristic property of colloids. Particles in a colloid do not settle quickly, are not visible to the naked eye, and do not dissolve completely like in a true solution.

Answer:

b. Particles scatter light