SCIENCE
Paper 2 (Chemistry) - 2007
(One hour and a half)
Question 1
(a) From the list given below, select the word(s) required to correctly complete blanks (i) to (v) in the following passage:-
ammonia, ammonium, carbonate, carbon dioxide, hydrogen, hydronium,
hydroxide, precipitate, salt, water.
(Note: Words chosen from the list are to be used only once. Write the answers as a(i), (ii), (iii) and so on. Do not copy the passage.)