18 Metallic Bonding

Question 1

only metal elements are involved

Answer 1

metallic bonding

Question 2

found in the middle and on the left-hand side of the periodic table

Answer 2

metals

Question 3

valence electrons sperate from their atoms and become delocalized, creating a _____

Answer 3

sea of electrons

Question 4

atoms become positive ions; become attracted to electrons

Answer 4

metallic bonding

Question 5

why positive metal ions do not repel each other

Answer 5

sea of electrons/delocalized electrons

Question 6

high melting and boiling points because these bonds are very strong

Answer 6

metallic bonding

Question 7

good conductors of electricity and heat because of the delocalized electrons

Answer 7

metals

Question 8

why are metals good conductors of electricity and heat?

Answer 8

delocalized electrons pass electrical charge and thermal energy

Question 9

when a metal is hit, layers of it ________

Answer 9

slide over each other

Question 10

bonds are ______ when a metal’s shape is changed

Answer 10

shifted but not broken

Question 11

most metals are ____ because of delocalized electrons

Answer 11

lustrous (shiny)

Question 12

metals can be made stronger by adding another element when the metal is molten

Answer 12

alloying

Question 13

atoms of new element spread through crystal structure

Answer 13

alloying

Question 14

substance formed from alloying

Answer 14

alloys

Question 15

most abundant metal in earth’s crust

Answer 15

aluminum (Al)

Question 16

lightness and strength make it good for aircrafts, spacecrafts, soft drink cans, foil, and automobile wheels

Answer 16

aluminum (Al)

Question 17

2nd most abundant metal in earth’s crust

Answer 17

iron (Fe)

Question 18

strong and abundant metal in earth’s crust

Answer 18

iron (Fe)

Question 19

by-product of Iron (Fe) and Carbon (C)

Answer 19

steel

Question 20

used in railways, roads, subways, bridges, buildings, skyscrapers, ships, and cars

Answer 20

steel

Question 21

made of iron (Fe), carbon (C), and nickel (Ni) or chromium (Cr)

Answer 21

stainless steel

Question 22

low cost and high resistance for corrosion and high temps

Answer 22

stainless steel

Question 23

used in utensils, sinks, cookware

Answer 23

stainless steel

Question 24

good conductor of electricity and good for ductility

Answer 24

copper (Cu)

Question 25

reddish-orange metal

Answer 25

copper (Cu)

Question 26

second to silver (Ag) as best electrical conductor

Answer 26

copper (Cu)

Question 27

copper (Cu) mixed with Zinc (Zn)

Answer 27

brass

Question 28

used for musical instruments, padlocks

Answer 28

brass

Question 29

copper (Cu) mixed with Tin (Sn)

Answer 29

bronze

Question 30

sculptures and medals; industrial like bushings and bearings

Answer 30

bronze

Question 31

fuels nuclear reactors and power plants as a source of energy

Answer 31

uranium (U)

Question 32

known for outstanding durability, significant rarity, extravagant beauty

Answer 32

precious metals

Question 33

white-grey metal

Answer 33

platinum (Pt)

Question 34

even more valuable then silver (Ag) and gold (Au) because of its many uses

Answer 34

platinum (Pt)

Question 35

precious metal, treasured since earliest times

Answer 35

gold (Au)

Question 36

often mixed with other metals (like Ag, Ni, Pt, Cu) to increase strength/alter color

Answer 36

gold (Au)

Question 37

most reflective metal

Answer 37

silver (Ag)

Question 38

best conductor of heat and electricity when pure

Answer 38

silver (Ag)

Question 39

used for centuries to make jewelry and other items that display its luster

Answer 39

silver (Ag)