Ch 6 Section 4

Question 1

This difference is reflected in the unique properties of

Answer 1

Metals

Question 2

Metals are much better electrical conductors than even

Answer 2

Molten ionic compounds

Question 3

The electrical conductivity if metals is due to the highly mobile

Answer 3

Valence electrons of the atoms in metals

Question 4

The mobility in metals valence electrons is not possible in molecular compounds in which electrons are localized I.

Answer 4

Electron-pair bonds between neutral atoms

Question 5

The mobility in metals valence electrons is not possible in solid ionic compounds in which electrons are bound to individual

Answer 5

Ions that are held in place in crystal structures

Question 6

Chemical bonding is different in metals than it is in

Answer 6

Ionic, molecular or covalent-network compounds

Question 7

The highest energy levels of most metal atoms are occupied by very few

Answer 7

Electrons

Question 8

In s-block metals one or two valence electrons occupy the outermost orbital and all three outermost p orbitals are

Answer 8

Vacant

Question 9

D block metals also possess many vacant

Answer 9

D orbitals in the energy level just below their highest energy level

Question 10

Within s metal the vacant orbitals in the atoms outer energy levels overlap allowing the outer electrons of the atoms to

Answer 10

Roam freely throughout the entire metal

Question 11

The electrons are dr localized meaning that they do not belong to

Answer 11

Any one atom but move freely about the metals network of empty atomic orbitals

Question 12

Mobile electrons form a sea of electrons around the metal atoms which are

Answer 12

Packed together in a crystal lattice

Question 13

Metallic bonding is the chemical bonding that results from the

Answer 13

Attraction between metal atoms and the surrounding sea of electrons

Question 14

The freedom of electrons to move in a network of metal atoms accounts for the high

Answer 14

Electrical and thermal conductivity characteristic of all metals

Question 15

Metals are both strong… Of light

Answer 15

Absorbers and reflectors

Question 16

Because they contain many orbitals separate by extremely small energy differences metals can absorb a

Answer 16

Wide range of light frequencies

Question 17

This absorption of light results in the

Answer 17

Excitation of the metal atoms electrons. To higher energy levels

Question 18

In metals the electrons immediately fall back down to lower levels emitting

Answer 18

Energy in the form of light at a frequency similar to the absorbed frequency

Question 19

Re-radiated (reflected) light is responsible for the metallic

Answer 19

Appearance: luster of metal surfaces

Question 20

Most metals are easy to form into desired shapes due to their

Answer 20

Malleability and ductility

Question 21

Malleability is the ability of a substance to be

Answer 21

Hammered or beaten into thin sheets

Question 22

Ductility is the ability of a substance to be

Answer 22

Drawn pulled or extruded through a small opening to produce a wire

Question 23

The malleability and ductility of metals are possible because metallic bonding is the same in

Answer 23

All directions throughout the solid

Question 24

When struck one plane of atoms in a metal can slide past another without encountering

Answer 24

Resistance or breaking bonds

Question 25

Metallic bond strength varied with the nuclear charge of the

Answer 25

Metal atoms and the number of electrons in the metals electron sea

Question 26

Both of these factors (factors of variation f metallic bond strength) are reflected in s metals

Answer 26

Enthralled if vaporization

Question 27

The amount of energy required to vaporize the metal is a measure of the

Answer 27

Strength of the bonds that hold the metal together

Question 28

The enthalpy of vaporization is defined as the amount of energy absorbed as

Answer 28

Heat when a specified amount of a substance vaporizes at constant pressure