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Modern Chemistry 51 Chemical Bonding

CHAPTER 6 REVIEW

Chemical Bonding

MIXED REVIEW

SHORT ANSWER Answer the following questions in the space provided.

1. Define and describe the range of electronegativity difference for the following

types of bonds:

ionic bond

polar covalent bond

nonpolar covalent bond

2. Define electronegativity ___________________________________________

3. chemical bond-_________________________________________

4. As bond length decreases, bond energy ___________________________

5. Distinguish among the three intermolecular forces:

a. hydrogen bond

b. dipole-dipole

c. London dispersion

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Modern Chemistry 52 Chemical Bonding

4. . Use the electronegativity values shown on your periodic table to determine

whether each of the following bonds is nonpolar covalent, polar covalent, or

ionic.

a. HF

_______________ b. NaCl

c. _ HO

d.

H

H

5. How is a hydrogen bond different from an ionic or covalent bond?

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

6. Distinguish between a structural formula and a chemical formula

______________________________________________________________

7. H2S and H2O have similar structures and their central atoms belong to the

same group. Yet H2S is a gas at room temperature and H2O is a liquid. Use

bonding principles to explain why this is.

_______________________________________________________________

_______________________________________________________________

_______________________________________________________________

8. Name four elements which are exceptions to the octet rule

_______________ ______________ ____________________ ______________

9. Compare and contrast ionic and covalent compounds by completing the chart

below

Ionic Covalent

Types of elements

basic unit

Physical state at room

temperature

Melting points

Conductivity

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Modern Chemistry 52 Chemical Bonding

9. Complete the following chart:

Forces: ionic bond, network covalent bond, metallic bond, hydrogen bond,

dipole-dipole, London disperion

Substance force MELTING POINT C

Bi 324

CaF2 1423

CH4 -182

water 0

Ba 727

KCl 770

HClO -5

diamond 65000(at very high

pressure)

Lewis

structure

Polar or

nonpolar

ABE Shape IMF High Med

or low

boiling

point

Solid,

liquid or

gas

PI3

CCl2O

X

HI

X

CS2

OBr2

AlCl3

Name _______________________________ Date __________________ Class __________________

Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.

Modern Chemistry 51 Chemical Bonding

SO4--2

PO3-3

PCl5

X X