Covalent Bonding Answers

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Which statement describes a property of covalent compounds?

A
They have a high boiling point because of strong intermolecular forces.
B
They have a low boiling point because of weak intermolecular forces.
C
They have a low melting point because of strong intermolecular forces.
D
They have a high melting point because of weak intermolecular forces.
5

Which statement about covalent compounds is true?

A
They are able to melt at high temperatures.
B
They are poor conductors of heat.
C
They have strong intermolecular attractions.
D
They have atomic bonds that are easy to break.
7

Some atoms are exceptions to the octet rule by having an expanded octet. Which characteristic is needed for an atom to have an expanded octet?

A
The atom has empty d-orbitals.
B
The atom has more than eight valence electrons before bonding.
C
The atom has empty p-orbitals.
D
The atom has fewer than eight valence electrons after bonding.
8

Which type of bond will form between two chlorine atoms?

A
an ionic bond
B
a metallic bond
C
a polar covalent bond
D
a nonpolar covalent bond
9

Which characteristic best explains the difference in melting behavior of covalent substances and ionic substances?

A
Ionic substances have weaker intermolecular attractions.
B
Ionic substances usually have stronger atomic bonds.
C
Covalent substances have weaker intermolecular attractions.
D
Covalent substances usually have stronger atomic bonds.

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