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Chemistry, 7/e
Raymond Chang, Williams College
Nonmetallic Elements and Their Compounds

Self Assessment A



1

In which compound does the hydrogen atom have a negative charge?
A)NH3
B)B2H6
C)CaH2
D)HCl
E)CH4
2

One important feature of the chemistry of carbon is
A)its ability to catenate.
B)its large radius that allows other atoms to fit easily around it.
C)its ability to form multiple bonds with hydrogen.
D)its low electronegativity that allows it to ionize easily.
E)B and C are both correct.
3

The chemical formula of the carbide ion is
A)C2- or C2-.
B)CN-.
C)C4+.
D)C3-.
E)C22- or C4-.
4

Dinitrogen monoxide (nitrous oxide, N2O) is
A)a brown poisonous gas that is one of the chemicals involved in the production of photochemical smog.
B)a colorless gas that decomposes into nitrogen and oxygen upon heating.
C)a colorless gas used in the production of nitric acid.
D)the product of nitrogen fixation in the atmosphere.
E)a colorless gas used in the manufacture of explosives.
5

Which of the following contains a tetrahedral arrangement of phosphorus atoms?
A)P4O6
B)P4
C)P4H10
D)A and C
E)All of the above.
6

Carbon dioxide is used in all of the following ways except
A)to provide the "bite" in soft drinks.
B)in fire extinguishers.
C)as a refrigerant.
D)in the Frasch process.
E)in the manufacture of soda ash.
7

Nitric acid and sulfuric acid are both powerful oxidizing agents because:
A)the central elements (N and S) are in high oxidation states.
B)the central elements (N and S) have low oxidation states.
C)the elements nitrogen and sulfur are very stable.
D)both compounds can be obtained in highly concentrated forms.
E)More information would have to be given to answer the question.
8

The chemical formula for the superoxide ion is:
A)O-
B)O22-
C)O2-
D)O3-
E)O2-
9

The Frasch process is used to
A)mine elemental sulfur.
B)remove traces of water from organic solvents.
C)oxidize sulfides of many metals to the corresponding sulfates.
D)manufacture freon.
E)manufacture nitric acid.
10

The halogens are
A)strong acids.
B)oxidizing agents.
C)reducing agents.
D)strong bases.
E)not very reactive.








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