Separating Solutes from Solvents

• 1. Evaporation

  • Separates a solute from a solvent by changing the solvent to a gas. For example, when a salt water is heated, the water is evaporated (changes to gas) and the solute (salt) is left behind.
• 2) Chromatography

  • Is a process of separating out different parts of chemical mixtures onto an absorbent material that can then be individually analysed because different parts are caught on the material at different rates. For example, separation plant pigments is the most common use of paper chromatography in biology.
• 3) Distillation

  • Is a way of separating the solvent from a solution by evaporation and condensation. For example, we can get pure water from sea water through the process of distillation.