You notice that you cannot read your book through a test tube of fluid held against the print, making it so blurred as to be unreadable. there is no precipitant in the bottom of the beaker, though it has been sitting for several days in a rack. what type of liquid is this?
a, suspension
b, colloid
c, mixture
d, solution

b. colloid

Explanation:

Colloids are solutions that are going to have a solute and a solvent, but the size of the particles are bigger than in a solution that is clear. that is the reason that it looks blurred because the particles are bigger.

In the other hand, these particles of the solute are big, but not so big and heavy as in a suspension, so they are not going to precipitate in the bottom.

The movement of the particles are called Brownian movement, and they are the responsible to avoid to settle down at the bottom of the recipient.

a:

by the combination of an unlimited number of elements

gas

explanation:

smoke is the matter of a gas