U5L4 - Lecture Notes - Metallic Bonds and Properties of Metals

Multiple Choice

Which is the model that proposes that all the metal atoms in a metallic solid contribute their valence electrons to form a "sea" of electrons that surrounds the metal cations in the lattice?

• the electron sea model

• the metal lattice model

• the cation sea model

Fill in the Blanks

The attraction of a metallic cation for delocalized electrons is a(n)________ ____ .

Multiple Choice

True or False: Metals are not ionic but share several properties with ionic compounds

• True

• False

Multiple Select

Which properties do metals and ionic compounds share?

Multiple select question.

• They conduct electricity in the solid state.

• They involve bonds between cations and anions.

• They involve bonding that is based on the attraction of unlike charges.

• They form lattice structures in the solid state.

Fill in the Blanks

Metals are good thermal and electrical conductors because their

electrons can move around within the solid.

Fill in the Blanks

Metals are malleable and ductile because the cations and electrons involved in metallic bonding are

and can be pulled or pushed past each other.

Multiple Choice

Compared with the properties of iron, its main component, the properties of steel ______.

• are mostly similar, with some differences, such as added strength

• are exactly the same, with the exception of appearance

• are completely different, with the exception of chemical properties

  
  

Fill in the Blanks

A mixture of elements that has metallic properties is called a(n)

.

Multiple Select

The two basic types of alloys are ____________ alloys and ____________ alloys.

• interstitial

• substitutional

• transitional

• superstition

Match

Match each alloy with its description.

• alnico

• bronze

• stainless steel

• brass

• pewter

iron, aluminum, nickel, cobalt; magnets

copper, zinc, tin; bearings, bells

iron, chromium, nickel; instruments,sink

copper and zinc;

plumbing, lighting

tin, antimony, and lead;

tableware

• iron, aluminum, nickel, cobalt; magnets

• copper, zinc, tin; bearings, bells

• iron, chromium, nickel; instruments,sink

• copper and zinc;

  plumbing, lighting

• tin, antimony, and lead;

  tableware