Delocalized Electrons
Ductility and Malleability
Conductivity and Luster
Crystalline Structure and Properties of Metals
Defects and Properties of Metals/Alloys
100

What makes metals so different from nonmetals is their unique arrangement of ___________.

Electrons

100

_______________ is the ability to be drawn into wires.

Ductility

100
Metals are good conductors of __________ and __________.

Heat and electricity

100

What is the 3D structure of pure metals?

Crystalline structure

100

True or False? Natural crystals are ALWAYS perfect.

FALSE

200

Why can't metal atoms form covalent bonds with their neighboring atoms?

too few electrons

200

_____________ is the ability to be hammered or pressed into shapes.

Malleability

200

What is it called when a material can conduct heat?

thermal conductivity

200

The microscopic crystal structure of a metal largely determines its __________________________.

macroscopic bulk properties

200

Errors in the crystal structure of a metal are called

point defects

300

electrons that don't stay close to their original atom in metals are known as

delocalized electrons

300

What property of electrons in metals explains both ductility and malleability?

mobility (of delocalized electrons)

300

What is it called when a material can conduct electricity?

electrical conductivity

300

What are the 3 packing arrangements that most metals adopt?

body-centered cubic, face-centered cubic, and hexagonal close-packed.

300

The presence of defects in the crystalline structure of metals can strongly influence many of the crystal's ___________.

properties.

400

Electrons in metals move around freely and hold the metal atoms in a _______________ structure.

Crystalline

400

Drifting electrons ____________ metal cations from each other.

insulate

400
Thermal and electrical conductivity make metals very useful for

cookware (pots and pans)

400

Young's modulus is a measure of a solid material's stiffness. Based on the table given on page 232 in the textbook, what structure would we expect an unknown metal to have if its Young's modulus is 62?

FCC

400

What are the three types of point defects mentioned in the book?

interstitial

substitution

vacancy

500

Metal atoms do not form a ____________ bond.

Chemical
500

When pressure is applied to metal, the cations easily change position, so the metal changes shape without breaking. However, in _________ compounds, pressure tends to push the ions closer together which causes ionic repulsion and makes the crystal shatter.

ionic

500

Light causes the free electrons in metals to become excited and move! As they move, the release that excited energy as light. This is called ___________, and it is the reason why metals are _________.

luster; shiny

500

When the planes of atoms in a metal crystal are closely packed, it tends to be easier for them to ________________.

slide past each other
500

Colorful gemstones are created by _________   __________.

point defects

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