1. What is a solute?

a) A solid that dissolves in a solvent
b) A liquid that dissolves substances
c) A substance that cannot be dissolved
d) A mixture of two or more liquids

2. The method used to separate an insoluble solid from a liquid is called .

3. What is the liquid that passes through the filter paper during filtration called?

a) The residue
b) The filtrate
c) The solute
d) The solvent

4. A is the liquid that dissolves the to form a solution

5. Why can't filtration be used to separate salt from salt water?

a) Salt is a solvent
b) Water is a solute
c) Salt dissolves in water
d) Salt is insoluble

6. What happens to a solution as the solvent evaporates?

a) It cools down
b) It turns into a solid
c) It becomes less concentrated
d) It becomes more concentrated

7. Which of the following is an example of a solvent?

a) Water
b) Salt
c) Sugar
d) Sand

8. Which one of the following processes best describes how a solution is formed?

a) Evaporation
b) Dissolving
c) Condensation
d) Filtering

9. How does a slower rate of cooling generally affect crystal size during crystallisation?

a) It results in smaller crystals
b) It results in larger crystals
c) It has no effect on crystal size
d) It causes the crystals to dissolve

10. Describe the relationship between solubility and temperature for most solid solutes?

a) As the temperature increases most solids become insoluble
b) There is no direct relationship
c) Solubility generally decreases with increasing temperature
d) Solubility generally increases with increasing temperature