Unit 8 Chemical Bonding

What occurs during ionic bonding?

• Electrons are shared equally.

• Electrons are shared unequally.

• There is a transfer of electrons.

• There is no transfer of electrons.

What type of bond forms between a metal and a nonmetal?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

What is Coulomb's Law used to describe?

• The sharing of electrons in covalent bonds.

• The attraction oppositely charged ions have for each other.

• The repulsion between like-charged ions.

• The energy levels of electrons in an atom.

In Coulomb's Law, what does the variable 'r' represent?

• The numerical ion charges

• The energy of the compound

• The distance between the ion centers

• The number of electrons transferred

What is the difference in electronegativity for nonpolar covalent bonds?

• < 0.5

• ≥ 0.5

• 1.0

• 2.0

What is the difference in electronegativity for polar covalent bonds?

• < 0.5

• ≥ 0.5

• 1.0

• 2.0

What happens to the energy of the ion pair compared to the separated ions in an ionic bond?

• The ion pair has higher energy.

• The ion pair has lower energy.

• The ion pair has the same energy.

• The energy of the ion pair is unpredictable.

What does the negative sign in Coulomb's Law indicate?

• A repulsive force

• An attractive force

• No force

• A neutral force

The larger the difference in electronegativity between two atoms, the more ______ the bond is.

• nonpolar

• polar

• metallic

• covalent

When the difference in electronegativity is approximately ≥ 1.8, the bond is usually ______.

• covalent

• metallic

• ionic

• nonpolar