Chem 7.3 Metals

Which of these is NOT a characteristic of metals?

• Ductile

• Malleable

• Poor conductors of electricity

• Corrosion-resistant

A ____ is when 2 or more elements combine.

• alloy

• compound

• ionic bond

• nucleus

The difference between compounds and alloys:

• Compounds must always contain 1 or more metals.

• Alloys must always contain 1 or more metals.

The similarity between ionic compounds and metals:

• Both contain cations

• Both contain anions

• Both have a sea of electrons

• Both have the same valence shells.

The valence electrons in metals can be described as a ___ of electrons.

• rigid structure

• absence

• sea

The valence electrons of metals are ____ .

• absent

• rigid and fixed in place

• drifting and mobile

Sterling silver jewelry is 92.5% silver and is usually marked ___.

• 7.5

• 92.5%

• 925

Alloys are beneficial because they tend to have superior (better) qualities than _____

• their individual components

• the noble gases

• all other elements

True or False: all compounds are alloys, but not all alloys are compounds.

• True

• False

Metals that can be formed into wires are known as ____.

• malleable

• durable

• ductile