Quiz: Structural Formulas

1. The electron configuration for carbon is
a. 1 s2 2 s2 2 p2
b. 1 s2 2 s1 2 p3
c. 1 s2 2 s3 2 p1
2. In order to completely fill the valence shell, carbon wants how many bonds?
a. 2
b. 3
c. 4
3. A carbon atom has __________ valence electrons and needs __________ electrons to fill the valence shell orbitals.
a. 4, 2
b. 4, 4
c. 2, 4
4. In a structural formula, __________ (is) are used to depict two electrons in a chemical bond.
a. dots
b. two small e–
c. a single line
5. A molecular formula tells the
a. number and types of atoms in the molecule
b. arrangement of the atoms in the molecule
c. total number of bonds in the molecule
6. The same molecular formula can represent
a. only one specific molecule
b. several different isomers
c. the physical state of the molecule
7. The structure of a molecule affects
a. only the chemical properties of the compound
b. only the physical properties of the compound
c. both the chemical and physical properties of the compound
8. In organic chemistry, structure is just as important as
a. composition
b. isomerism
c. nomenclature
9. What type of formula omits the carbon-hydrogen bonds?
a. structural
b. molecular
c. condensed structural
10. Isopropyl alcohol and n-propanol have the same molecular formula, C3H7OH, yet their structures are different. These compounds are known as
a. alkenes
b. isomers
c. aldehydes
11. Carbon always forms __________ covalent bonds.
a. 2
b. 3
c. 4

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