Pretest

Question 1

Which element is likely to be the best conductor of electricity?

Revolt · Accepted Answer

copper

Question 2

Which is a characteristic of the electron sea model for metallic bonding?

Revolt · Accepted Answer

Electrons flow easily between metal nuclei.

Question 3

Which reason best explains why metals are ductile instead of brittle?

Revolt · Accepted Answer

because they have flexible bonds

Question 4

Which is the best metal to use in an alloy to increase its electrical conductivity?

Revolt · Accepted Answer

Cu

Question 5

Which is most likely the result of millions of metal atoms crowding together so that molecular orbitals become combined?

Revolt · Accepted Answer

the formation of bands in a crystal

Question 6

Which property is true for metals?

Revolt · Accepted Answer

low ionization energies

Question 7

Which statement is true when a crystal is formed from many metal atoms?

Revolt · Accepted Answer

There are many molecular orbitals.

Question 8

In a piece of metal, what holds the atoms together?

Revolt · Accepted Answer

the positive charges of the nuclei and the negative charges of delocalized electrons

Question 9

Which property is better explained by the band theory than by the sea-of-electrons model?

Revolt · Accepted Answer

electrical conductivity

Question 10

Which combination of factors is most suitable for increasing the electrical conductivity of metals?

Revolt · Accepted Answer

more valence electrons and smaller atomic radius

Pretest Answers