Final answer:
Butter is not considered a chemical solution, whereas the other options, ammonia, bronze, and fog, have characteristics of solutions. Therefore, butter is the correct answer to the question of which item listed is not a solution.
Step-by-step explanation:
To answer the question of which of the following is not a solution, we first need to establish what a solution is in the chemical sense. A solution is a homogeneous mixture composed of two or more substances, where a solute is dissolved in a solvent. With this definition in mind:
- a. Ammonia: This refers to a common household cleaner which is a solution of ammonium hydroxide in water, so this is a solution.
- b. Butter: Butter is a solid emulsion of water in a matrix of fat and protein, not typically considered a solution,
- c. Bronze: An alloy of copper and tin, which is a solid mixture but not considered a solution in a chemical sense.
- d. Fog: A suspension of tiny water droplets or ice crystals in the air, similar in character to a solution but since it's a dispersed system and not a true solution, it is often not classified as such.
In the context of this question, the correct answer would be b. Butter, as it is not considered a chemical solution.