A(n) _____ is an unstable physical mixture of undissolved particles in a liquid.

(a) Do colloids made only of gases exist? Why or why not?

(b) In the 1850s, Michael Faraday prepared ruby-red

colloids of gold nanoparticles in water that are still stable

today. These brightly colored colloids look like solutions.

What experiment(s) could you do to determine whether a

given colored preparation is a solution or colloid?

Choose the best answer: A colloidal dispersion of one liquid

in another is called (a) a gel, (b) an emulsion, (c) a foam,

(d) an aerosol

When 1 g of fructose is dissolved in 500 ml of water, is the solvent and is the solute.

If you were to stir salt in water until the salt disappeared, which is the solute?