1. Which of the following is known as a 'proton donor'?   base   acid   salt   water   Hint Half-n-half Clue   2. _______ is a basic gas which is used in the manufacture of fertilizers such as Urea.   Nitrogen   Chlorine   Ammonia   Oxygen   Half-n-half Clue   3. A base is known as a 'proton _______'.   acceptor   donor   4. _______ acid is the chemical name of Vitamin C.   Tartaric   Ascorbic   Boric   Oxalic   Half-n-half Clue   5. Which of the following salts is insoluble in water?   Barium chloride   Potassium phosphate   Ammonium carbonate   Zinc sulfide   Half-n-half Clue   6. Which of the following salts is soluble in water?   Copper carbonate   Lead chloride   Sodium sulfide   Barium sulfate   Half-n-half Clue   7. The reaction of an acid with a base is called a neutralization reaction.   True   False