Choose the correct answer for each question.

1. What two substances are always produced by a neutralization reaction?

   1.   ?    an acid and a base
   2.   ?    water and a base
   3.   ?    water and a salt
   4.   ?    water and an acid

2. An acid is:

   1.   ?    a proton donor
   2.   ?    a proton acceptor
   3.   ?    a proton
   4.   ?    a proton destroyer

3. A base is:

   1.   ?    a proton donor
   2.   ?    a proton acceptor
   3.   ?    a proton
   4.   ?    a proton destroyer

4. When acids react with metals, the gas produced is:

   1.   ?    carbon dioxide
   2.   ?    hydrogen
   3.   ?    oxygen
   4.   ?    water vapor

5. Acids taste:

   1.   ?    Sweet
   2.   ?    Salty
   3.   ?    Bitter
   4.   ?    Sour

6. Bases taste:

   1.   ?    Sweet
   2.   ?    Salty
   3.   ?    Bitter
   4.   ?    Sour

7. A positive test for an acid occurs when:

   1.   ?    red litmus turns blue
   2.   ?    red litmus remains red
   3.   ?    blue litmus turns red
   4.   ?    blue litmus remains red

8. A positive test for a base occurs when:

   1.   ?    red litmus turns blue
   2.   ?    red litmus remains red
   3.   ?    blue litmus turns red
   4.   ?    blue litmus remains red

9. Bases cause phenolphthalein to turn:

   1.   ?    orange
   2.   ?    green
   3.   ?    violet
   4.   ?    clear

10. The characteristic ion of bases is:

    1.   ?    hydrogen ion (H⁺)
    2.   ?    hydroxide ion (OH^-)
    3.   ?    sodium ion (Na⁺)
    4.   ?    carbonate ion CO₃^2-

11. The characteristic ion of acids is:

    1.   ?    hydrogen ion (H⁺)
    2.   ?    hydroxide ion (OH^-)
    3.   ?    phosphate ion PO₄^3-
    4.   ?    carbonate ion CO₃^2-

12. Which of the following statements is true?

    1.   ?    Acids and bases are electrolytes
    2.   ?    Acids are electrolytes and bases are nonelectrolytes
    3.   ?    Acids are nonelectrolytes and bases are electrolytes
    4.   ?    Acids and bases are nonelectrolytes

13. Strong acids:

    1.   ?    Ionize slightly and produce few hydrogen ions in solution
    2.   ?    Ionize completely and produce many hydroxide ions in solution
    3.   ?    Ionize completely and produce many hydrogen ions in solution
    4.   ?    Ionize slightly and produce few hydroxide ions in solution

14. Indicator	Results
    Phenolphthalein	Clear
    Red litmus	Remains red
    Blue litmus	Turns red
    Methyl orange	Turns deep red

    
    An unknown substance produced the experimental results noted above. Based on this data, the unknown is:
    1.   ?    a base
    2.   ?    a sugar
    3.   ?    an acid
    4.   ?    impossible to identify

15. The strongest bases are hydroxides of:

    1.   ?    halogens
    2.   ?    noble gases
    3.   ?    transition metals
    4.   ?    group 1 and group 2 metals

16. The acid present in vinegar is:

    1.   ?    sulfuric acid
    2.   ?    acetic acid
    3.   ?    hydrochloric acid
    4.   ?    nitric acid

17. Which of the following is a property of acids?

    1.   ?    Feel slippery
    2.   ?    Turn red litmus blue
    3.   ?    taste bitter
    4.   ?    react with carbonates to form CO₂ gas

18. In a neutralization reaction between magnesium hydroxide, Mg(OH)₂, and nitric acid, HNO₃, the salt produced would be:

    1.   ?    magnesium acid
    2.   ?    nitric hydroxide
    3.   ?    magnesium nitrate
    4.   ?    magnesium nitride

19. Acids have a pH:

    1.   ?    less than 7
    2.   ?    equal to 7
    3.   ?    greater than 7

20. Bases have a pH:

    1.   ?    less than 7
    2.   ?    equal to 7
    3.   ?    greater than 7