Chemistry

Question Analysis
This question involves the core characteristics of solutions. The main focus is on distinguishing the universal trait of solutions from their variable properties.

Key Concept Explanation
A solution is defined as a homogeneous mixture, which means its composition and properties are uniform at every point in the mixture. Solutions can be solid (e.g., alloy), liquid (e.g., salt water), or gas (e.g., air), and they can be colored (e.g., copper sulfate solution) or contain more than two substances.

Step-by-Step Solution
1. Recall the fundamental trait of solutions: homogeneity.
2. Analyze each option:
A: Incorrect—solutions can be colored (e.g., blue copper sulfate solution).
B: Correct—uniform composition...