Metals

Question 1

The valence electrons are _____ throughout the crystal, providing a strong cohesive force that holds the metal atoms together.

Answer 1

Delocalized

Question 2

_____ solids - Extended networks of atoms held together by metallic bonding.

Answer 2

Metallic

Question 3

_____ solids - Extending networks of ions held together by ion-ion interactions.

Answer 3

Ionic

Question 4

_____ solids - Extending networks of atoms held by covalent bonds.

Answer 4

Covalent-network

Question 5

______ solids - Discrete molecules held together by intermolecular forces.

Answer 5

Molecular

Question 6

_____ solids are poor conductor of heat and electricity, has relatively high melting point, hard but brittle, relatively dense and has a dull surface.

Answer 6

Ionic

Question 7

_____ solids are poor conductor of heat and electricity, has low melting point, soft, has low density, and has a dull surface.

Answer 7

Molecular

Question 8

_____ solids are poor conductor of heat and electricity, has high melting point, very hard but brittle, has low density, and has a dull surface.

Answer 8

Covalent

Question 9

_____ solids are good conductor of heat and electricity, melting point depends on electron configuration, ductile and malleable, usually has high density, and has a lustrous surface.

Answer 9

Metallic

Question 10

Metals are good _____ conductors because their delocalized electrons carry electrical charge through the metal.

Answer 10

Electrical

Question 11

Metals are good _____ conductors because their delocalized electrons transfer energy.

Answer 11

Heat

Question 12

Metals have high _____ and _____ points because of the metallic bonding in the giant structure of a metal is very strong.

Answer 12

Melting, Boiling

Question 13

Metals are _____ because they can be hammered and bent into thin sheets without breaking.

Answer 13

Malleable

Question 14

Metals are _____ because they can be stretched into wires.

Answer 14

Ductile

Question 15

4 best electrical and heat conductors.

Answer 15

Silver > Copper > Gold > Aluminum

Question 16

_____ are mixtures of elements that have properties/characteristic of metals.

Answer 16

Alloys

Question 17

An alloy made of ~90% copper and ~10% tin.

Answer 17

Bronze

Question 18

An alloy made of ~70% copper and ~30% zinc.

Answer 18

Brass

Question 19

An alloy made of 99% iron and 1% carbon.

Answer 19

Steel

Question 20

An alloy made of ~74% iron, ~8% carbon, and ~18% chromium.

Answer 20

Stainless Steel

Question 21

An alloy made of ~80% nickel and ~20% chromium.

Answer 21

Nichrome

Question 22

An alloy made of ~63% tin and ~37% lead.

Answer 22

Solder

Question 23

An alloy made of ∼92% tin, 6% antimony, and 2% copper.

Answer 23

Pewter

Question 24

An alloy made of 92.5% silver and 7.5% copper.

Answer 24

Sterling Silver

Question 25

An alloy made of ~95% aluminum, ~4% copper, ~0.5% magnesium, and ~0.5% manganese.

Answer 25

Duralumin

Question 26

In _____ alloys, solute particles take the place of solvent metal atoms.

Answer 26

Substitutional

Question 27

In _____ alloys, solute particles find their way into the holes between solvent metal atoms.

Answer 27

Interstitial

Question 28

_____ compounds are homogeneous alloys with definite properties and compositions.

Answer 28

Intermetallic