Chemical Bonding Final Exam Review

What is a chemical bond?

• An attraction between different atoms that bind together.

• A repulsion between different atoms that separate.

• A force that only exists in metals.

• A type of physical bond between molecules.

What are valence electrons?

• Electrons in the innermost shell.

• Electrons in the outer shell.

• Electrons in the nucleus.

• Electrons that are shared equally.

What results from the attraction between large numbers of positive ions and negative ions?

• Covalent bonding

• Ionic bonding

• Metallic bonding

• Hydrogen bonding

What type of elements tend to lose electrons to form positive ions?

• Nonmetals

• Metalloids

• Metals

• Noble gases

Where are metals located on the periodic table?

• On the right side of the zigzag line

• On the left side of the zigzag line

• In the middle of the periodic table

• At the bottom of the periodic table

What type of bond results from the sharing of a pair of electrons between two atoms?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

How many pairs of electrons are shared in a double bond?

• One pair

• Two pairs

• Three pairs

• Four pairs

What type of bond happens when electrons are shared equally by the bonded atoms?

• Polar covalent bond

• Nonpolar covalent bond

• Ionic bond

• Metallic bond

Which of the following is a diatomic molecule?

• H₂

• H₂O

• CO₂

• O

What is a key difference between ionic and covalent bonds?

• Ionic bonds occur only in organic compounds, while covalent bonds occur in inorganic compounds.

• Ionic bonds involve the sharing of electrons, while covalent bonds involve the transfer of electrons.

• Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

• Covalent bonds can only form between two metals, while ionic bonds can form between a metal and a nonmetal.