question_answer

(i) A spoonful of salt is added to a beaker containing 250 mL of water with continuous stirring. State two observations that you will make. (ii) Account for your observations.    

Answer:

(i) (a) Salt completely disappears in water.              (1)          (b) Volume of water does not increase.                                                            (1)       (ii) Since, there is a lot of space between water molecules, the salt molecules disappear into these spaces.          (1)