Are all mixtures solutions? Are all solutions mixtures? Give an example.
Not all mixtures are solutions, but all solutions are mixtures.
A mixture is a combination of two or more substances that are physically combined, but not chemically bonded. Mixtures can have varying compositions and properties, and the components of a mixture can be separated using physical processes.
A solution, on the other hand, is a specific type of mixture where one substance (called the solute) is uniformly dissolved in another substance (called the solvent). Solutions are homogeneous, meaning that the components are evenly distributed at a molecular level.
For example, a glass of salty water can be considered a solution. The salt (solute) is evenly distributed and dissolved in the water (solvent). In this case, the solution is also a mixture since it is made up of two different substances (salt and water) that can be separated through processes like evaporation or filtration.
However, not all mixtures are solutions. For instance, a mixture of sand and water is not a solution because the sand particles do not dissolve in the water. Instead, they remain suspended or settled at the bottom of the container, forming a heterogeneous mixture.