9.3

Question 1

known for
1. good conductor of electricity
2. good conductor of heat
3. shiny and reflective
4. malleable / ductile
5. high melting and boiling points

Answer 1

metals

Question 2

chemical bonds in which metal atoms are surrounded by delocalized electrons

Answer 2

metallic bonds

Question 3

electrons that circulate freely throughout a molecule or crystal instead of being bound to a single atom or pair of atoms

Answer 3

delocalized electrons

Question 4

The large number of _______ gives metals their characteristic properties

Answer 4

freely circulating electrons

Question 5

contribution of each bonding type to a bond

Answer 5

bond character

Question 6

true or false: in most cases, the bonding in compounds is not completely ionic, covalent, or metallic

Answer 6

true

Question 7

forces between molecules

Answer 7

intermolecular forces

Question 8

true or false: intermolecular forces bond atoms to form compounds

Answer 8

false; they bond molecules together without changing the compound

Question 9

forces between neighboring polar molecules caused by the attraction of oppositely charged ends

Answer 9

dipole-dipole forces

Question 10

which are stronger: dipole-dipole forces or ionic bonds?

Answer 10

ionic bonds

Question 11

the more polar the molecule, the __1__ the dipole-dipole force and the __2__ the boiling point

Answer 11

1. greater
2. higher

Question 12

weak intermolecular forces resulting from momentary dipoles in molecules

Answer 12

London forces

Question 13

only type of intermolecular force that occurs between most nonpolar molecules

Answer 13

London forces (Fritz London)

Question 14

how easily an electron cloud is distorted

Answer 14

polarizability

Question 15

unusually strong intermolecular force between molecules containing hydrogen covalently bonded to a highly electronegative atom

Answer 15

hydrogen bond

Question 16

true or false: hydrogen bonds are much stronger than any other intermolecular forces

Answer 16

true

Question 17

the 3 elements hydrogen must be bonded to to form hydrogen bonds

Answer 17

nitrogen, oxygen, and fluorine

Question 18

has no ordered arrangement or pattern for the particles that compose it

Answer 18

amorphous solid

Question 19

means syrupy

Answer 19

viscous

Question 20

characterized by particles arranged in a regular, repeated three-dimensional pattern

Answer 20

crystalline solid

Question 21

simplest repeating unit in a crystal

Answer 21

unit cell

Question 22

two bond shapes that are always polar

Answer 22

angular and trigonal pyramidal