Lesson 10 Chemical Bonds: Covalent

What is a covalent bond?

• Transfer of electron pairs between atoms

• Absorption of electron pairs between atoms

• Exchange of proton pairs between atoms

• Sharing of electron pairs between atoms

The formation of a covalent bond relies on the interaction or bonding of...

• 2 Nonmetals

• 1 Nonmetal & 1 Metal

• 2 Metals

• 2 Noble Gases

How do molecular compounds differ from ionic compounds?

• Molecular compounds are formed by the sharing of protons between atoms.

• Molecular compounds are formed by sharing electrons between atoms.

• Molecular compounds are formed by the attraction of positive and negative ions.

• Molecular compounds are formed by transferring electrons between atoms.

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

• 4

• 3

• 2

• 1

What is the difference between a single bond and a double bond?

• the single bond forms ions

• Exchange of protons

• No difference, they are the same

• the number of electrons shared

Explain the concept of triple bonds.

• A triple bond involves four bonding electrons

• A triple bond is a bond between three different elements

• A triple bond is a chemical bond between two atoms involving six bonding electrons instead of the usual two in a covalent single bond.

• A triple bond is weaker than a single bond

Explain the concept of coordinate covalent bonds.

• One atom provides both of the shared electrons in a covalent bond.

• One atom provides only one of the shared electrons in a covalent bond.

• Both atoms provide the shared electrons in a covalent bond.

• The electrons are not shared between the atoms in a covalent bond.

What does "polarity" mean in a bond?

• Combining of atoms to form a molecule

• The strength of a chemical bond

• The arrangement of atoms in a molecule

• The distribution of the electrons between the bonded atoms

How can you determine if a bond is polar or nonpolar?

• Check the color of the bond

• Compare the electronegativity of the atoms in the bond

• Count the number of atoms in the bond

• Measure the length of the bond

What determines the polarity of a bond?

• Electronegativity difference

• Number of protons in the atoms

• Size of the atoms involved

• Temperature of the environment