Which describes a combination of two or more substances that are not chemically combined?

• A. Mixture
• B. Compound
• C. Element
• D. Solution

Answer: (A)

The concept here is about how substances are mixed. A mixture is simply a physical blend of two or more substances that haven't reacted to form a new substance. Each part keeps its own properties, and you can separate the components using physical methods like filtering, picking apart by hand, or evaporating a liquid. This is what makes it the best description for two or more substances that aren’t chemically bound together.

In contrast, a compound forms when substances chemically react to create a new substance with its own properties, not just a blend of the originals. An element is a pure kind of atom, the simplest form of matter. A solution is a type of mixture that is uniform throughout, like salt in water, but it’s still a mixture because the components do not fuse into a new substance. So the situation described fits a mixture.