A mixture that is not uniform in composition; components are not evenly distributed throughout the mixture.

• A. Mixture
• B. Homogeneous mixture
• C. Heterogeneous mixture
• D. Compound

Answer: (C)

When a mixture isn’t the same throughout, you’re looking at a heterogeneous mixture. The different parts aren’t distributed evenly, so you can often see distinct components in different areas—like rocks with different minerals, a salad with various ingredients, or oil droplets separating in water.

In contrast, a homogeneous mixture has a uniform composition everywhere, so the parts blend so you can’t tell them apart by sight, like sugar dissolved in water or the air we breathe. A compound is a single substance formed from two or more elements bonded together in fixed proportions, with uniform properties throughout, not a mix of separate parts.