Question

mixture that does not appear to be evenly mixed throughout:
compound
a heterogeneous mixture
an atom
a homogeneous mixture

Explanation:

To solve this, we analyze the definitions: A heterogeneous mixture is one where the components are not evenly mixed (you can see different parts), a homogeneous mixture is evenly mixed, an atom is a basic particle, and a compound is a pure substance. The question asks for a mixture not evenly mixed, so the correct term is a heterogeneous mixture.

Answer:

B. a heterogeneous mixture (assuming the options are labeled with A, B, C, D where B is "a heterogeneous mixture")