Multiple Choice
In the context of solutions, what is the substance being dissolved in a solution called?
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6. Chemical Quantities & Aqueous Reactions
Solutions
Multiple Choice
Which of the following is a characteristic of a true solution (as opposed to a colloid or suspension)?
A
Its particles are large enough to settle out upon standing.
B
It is a homogeneous mixture at the molecular or ionic level and does not scatter a beam of light (no Tyndall effect).
C
It is always composed of a solid solute dissolved in a liquid solvent.
D
It can be separated into solute and solvent by filtration through filter paper.
Verified step by step guidance1
Understand the definition of a true solution: it is a homogeneous mixture where the solute particles are dissolved at the molecular or ionic level within the solvent.
Recall that in a true solution, the particles are so small that they do not settle out upon standing, unlike suspensions where particles are large enough to settle.
Recognize that true solutions do not exhibit the Tyndall effect, meaning they do not scatter light, whereas colloids do scatter light due to larger particle size.
Note that true solutions can be composed of any phase combinations (solid, liquid, or gas solutes and solvents), so they are not limited to solid solutes dissolved in liquid solvents.
Understand that true solutions cannot be separated by simple filtration because the solute particles are at the molecular or ionic scale and pass through filter paper, unlike suspensions.
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