Question

which is not an example of a solution?
○ a dental filling
○ chicken noodle soup
○ gasoline
○ tap water
○ soda

Explanation:

A solution is a homogeneous mixture where components are evenly distributed at the molecular level. A dental filling is a solid (typically an alloy or composite material), not a mixture of dissolved substances. Soda, tap water, gasoline, and chicken noodle soup (a heterogeneous mixture but still a mixture of components, while a filling is a pure/processed solid not a solution) are all mixtures, with the first three being homogeneous solutions.

Answer:

○ a dental filling