* Solutions are homogeneous mixtures. This means the components are evenly distributed throughout the mixture, and it has a uniform composition. You can't visually distinguish the different components.
* Heterogeneous mixtures have components that are not evenly distributed. You can see distinct parts or phases within the mixture.
Examples:
* Solution: Sugar dissolved in water. You can't see the sugar particles, and the sweetness is uniform throughout.
* Heterogeneous mixture: Sand and water. The sand particles settle to the bottom, and you can clearly see the difference between the sand and the water.
Key Takeaway: Solutions are defined by their homogeneity, while heterogeneous mixtures are characterized by their lack of uniform composition.