Fundamentals of General Organic and Biological Chemistry 8th Edition Test Bank

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Fundamentals of General, Organic, and Biological Chemistry, 8e (McMurry)

Chapter 4   Molecular Compounds

1) A chemical bond formed between two identical atoms is a(an) ________ bond.

1.     A) atomic

2.     B) covalent

3.     C) hydrogen

4.     D) ionic

5.     E) molecular

Answer:  B

Diff: 1

Section:  4.1

LO:  4.1

Global LO:  G2

2) A chemical bond formed when two atoms share two pairs of electrons is a ________ bond; it is best described as ________.

1.     A) double; covalent

2.     B) double; ionic

3.     C) single; covalent

4.     D) single; ionic

5.     E) triple; covalent

Answer:  A

Diff: 2

Section:  4.1

LO:  4.1

Global LO:  G2

3) Which representation of a hydrogen molecule is not correct?

1.     A) H=H

2.     B) H2

3.     C) H:H

4.     D) H—H

5.     E) none of the above

Answer:  A

Diff: 1

Section:  4.1

LO:  4.1

Global LO:  G2

4) In a covalent compound, the bond length can be defined as the distance between

1.     A) any two pairs of electrons.

2.     B) the two largest atoms.

3.     C) two nuclei when the repulsion is greatest.

4.     D) two nuclei when the attraction is greatest.

5.     E) two nuclei when repulsion and attraction are balanced.

Answer:  E

Diff: 2

Section:  4.1

LO:  4.1

Global LO:  G2

5) Which group contains only elements which normally exist as diatomic molecules?

1.     A) nitrogen; sulfur, bromine

2.     B) helium; neon, argon

3.     C) nitrogen; oxygen, fluorine

4.     D) hydrogen; lithium, sodium

5.     E) oxygen; phosphorus, germanium

Answer:  C

Diff: 2

Section:  4.1

LO:  4.1

Global LO:  G2

6) A chemical bond formed when two atoms share one pair of electrons is a ________ bond; it is best described as ________.

1.     A) double; covalent

2.     B) double; ionic

3.     C) single; covalent

4.     D) single; ionic

5.     E) triple; covalent

Answer:  C

Diff: 2

Section:  4.1

LO:  4.2

Global LO:  G2

7) When two atoms share one or more pairs of electrons, a covalent bond is formed.

Answer:  TRUE

Diff: 1

Section:  4.1

LO:  4.2

Global LO:  G2

8) When a non-metal atom bonds with another non-metal atom, an ionic bond is formed.

Answer:  FALSE

Diff: 1

Section:  4.1

LO:  4.2

Global LO:  G2

9) Which element is most likely to form three covalent bonds?

1.     A) C

2.     B) Si

3.     C) P

4.     D) S

5.     E) Se

Answer:  C

Diff: 1

Section:  4.2

LO:  4.3

Global LO:  G2