Question

blood is a mixture of a variety of materials. some of the materials are dissolved in the fluid portion of blood. other materials, such as blood cells, do not dissolve but move along with the blood. for these reasons, blood is an example of which type of mixture?
a. a solvent
b. a solution
c. a suspension
d. a buffer

Explanation:

To determine the type of mixture blood is, we analyze each option:

• Option A: A solvent is a substance that dissolves solutes, not a mixture type. Blood is a mixture, so A is incorrect.
• Option B: A solution is a homogeneous mixture where solutes are dissolved at the molecular level. But blood has blood cells that are not dissolved (they are suspended), so it's not a solution.
• Option C: A suspension is a heterogeneous mixture where particles (like blood cells) are dispersed in a fluid and can settle or be filtered. Blood has blood cells suspended in plasma, matching a suspension.
• Option D: A buffer is a solution that resists pH change, not a general mixture type for blood's overall composition.

Answer:

C. a suspension