Unit 5 Review

Electrons involved in bonding between atoms are:

• valence electrons

• inside the nucleus

• closest to the nucleus

• positively charged

How does sodium obey the octet rule when reacting to form compounds?

• by giving up electrons

• by gaining electrons

• it does not change the number of electrons

• it does not obey the octet rule

An ionic bond is the attraction between:

• similarly charged ions

• oppositely charged ions

• neutral ions

• neutral atoms

A chemical bond formed when two atoms share electrons is called a(n):

• ionic bond

• covalent bond

• polyatomic bond

• crystal bond

The attraction between a positive metal ion and the electrons surrounding it is a(n):

• chemical bond

• covalent bond

• ionic bond

• metallic bond

Which of the following terms is a property of metals that means they can be hammered or pounded into thin sheets?

• polar

• alloy

• ductile

• malleable

The pair of elements that forms a covalent bond is:

• Na and Cl

• O and Cl

• C and O

• Li and Br

The pair of elements that forms an ionic bond is:

• K and Br

• N and H

• C and O

• P and F

Which of these form a nonpolar covalent bond?

• C and O

• Na and F

• O and O

• K and Cl

Which of these form a polar covalent bond?

• Cl and Cl

• Na and F

• H and O

• K and Cl