Answers section
Questions 2.8(a)
State two methods by which you can decrease the concentration of salt in food or sugar in a drink.
Answers to Questions 2.8(a) 
Concentration of a solution can be lowered by (a) adding water or (b) adding another solution of the same solute but with a lower concentration
Dilution is the process of lowering the concentration by adding fresh water or a solution of lower concentration. The final concentration depends on the amount of water or dilute solution added.