A true solution is always
A. heterogeneous.
B. homogeneous.
C. colored.
D. clear.
E. made of only two elements.
B. homogeneous.
A true solution is always
B. homogeneous.
A true solution is a mixture of two or more substances where the components are evenly and uniformly distributed at a molecular level. This means that the solution has the same composition and properties throughout, regardless of the size of the sample. Homogeneous solutions are typically transparent or clear, as the particles are so small that they do not scatter light. However, the solution may or may not be colored, depending on the nature of the solute and solvent involved. The number of elements in a true solution can vary and is not limited to only two elements.
To determine the correct answer, let's analyze each option:
A. Heterogeneous: A heterogeneous mixture consists of different substances not uniformly distributed throughout. This means that different parts of the mixture will have different properties. Since a true solution is a uniform mixture, it is not heterogeneous. So, option A is incorrect.
B. Homogeneous: A homogeneous mixture is a uniform mixture where all components are evenly distributed, and it has the same properties throughout. A true solution is a type of homogeneous mixture, so option B is a valid possibility.
C. Colored: A true solution can be colored, but it can also be colorless. The presence or absence of color does not determine whether a solution is true or not. Therefore, option C is not necessarily true.
D. Clear: A true solution does not have any visible particles, and it appears as a clear, transparent liquid. Hence, option D is a valid characteristic of a true solution.
E. Made of only two elements: A true solution can be made up of two or more elements or compounds. It is not limited to just two elements. Therefore, option E is incorrect.
Based on this analysis, the correct answer is option B: homogeneous.