Science-8E solutions

Science-8E solutions

1. some solids dissolve in water to make a solution

   • these solids are soluble

2. a solution is made from a solute and a solvent

   • water is the most common solvent. it is available, cheap, and dissolves a lot of different solutes
     • other liquids (white spirit, ethanol) can also be used as solvents.
   • solutes that are insoluble in water may dissolve in other solvents

3. when a solution is formed, the liquid is always clear (transparent)

4. solids that do not dissolve are insoluble

   • when an insoluble solid is mixed with water, the water goes cloudy.

5. the total mass of a solution equals the mass of solvent added to the mass of solute

6. if you keep adding solutes to a solvent , you will get to a point where no more will dissolve

   • a saturated solution cannot dissolve any more solute

7. solutions and mixtures can be separated using different methods

   • filtering
   • evaporation
   • distillation
   • chromatography